1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 8, 2001 TRANSOCEAN SEDCO FOREX INC. (Exact name of registrant as specified in its charter) CAYMAN ISLANDS 333-75899 N/A (State or other jurisdiction of (Commission (I.R.S. Employer incorporation or organization) File Number) Identification No.) 4 GREENWAY PLAZA HOUSTON, TEXAS 77046 (Address of principal executive offices and zip code) Registrant's telephone number, including area code: (713) 232-7500 N/A (Former name or former address, if changed since last report)

2 ITEM 5. OTHER EVENTS. On May 8, 2001, Transocean Sedco Forex Inc., a Cayman Islands exempted company (the "Company"), entered into an Underwriting Agreement dated May 8, 2001 (the "Underwriting Agreement") between the Company and Credit Suisse First Boston Corporation. The Underwriting Agreement related to a public offering of $400,000,000 aggregate principal amount of 1.5% Convertible Debentures due May 15, 2021 (the "Debentures") under a registration statement on Form S-3 (No. 333-58604), as amended (the "Registration Statement"). The Company expects to enter into a Fourth Supplemental Indenture between the Company and The Chase Manhattan Bank, as trustee (the "Trustee") setting forth certain terms of the Debentures and including as an exhibit a form of Debenture. This Current Report on Form 8-K is being filed for the purpose of filing as exhibits the Underwriting Agreement, a form of the Fourth Supplemental Indenture, the form of Debenture and opinions of Baker Botts L.L.P. and Walkers, Cayman Islands, in connection with the Registration Statement and the public offering of the Debentures. ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS. The following exhibits are filed herewith: 1.1 Underwriting Agreement dated May 8, 2001 between the Company and Credit Suisse First Boston Corporation 4.1 Form of Fourth Supplemental Indenture to be dated as of May 11, 2001 between the Company and the Trustee 4.2 Form of Debenture (contained in Exhibit 4.1) 5.1 Opinion of Baker Botts L.L.P. 5.2 Opinion of Walkers, Cayman Islands 23.1 Consent of Baker Botts L.L.P. (included in Exhibit 5.1) 23.2 Consent of Walkers, Cayman Islands (included in Exhibit 5.2)

3 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. TRANSOCEAN SEDCO FOREX INC. Date: May 10, 2001 By: /s/ WILLIAM E. TURCOTTE ---------------------------------------- William E. Turcotte Associate General Counsel

4 EXHIBIT INDEX Exhibit No. Description - ----------- ----------- 1.1 Underwriting Agreement dated May 8, 2001 between the Company and Credit Suisse First Boston Corporation 4.1 Form of Fourth Supplemental Indenture to be dated as of May 11, 2001 between the Company and the Trustee 4.2 Form of Debenture (contained in Exhibit 4.1) 5.1 Opinion of Baker Botts L.L.P. 5.2 Opinion of Walkers, Cayman Islands 23.1 Consent of Baker Botts L.L.P. (included in Exhibit 5.1) 23.2 Consent of Walkers, Cayman Islands (included in Exhibit 5.2)

1 TRANSOCEAN SEDCO FOREX INC. 1.5% CONVERTIBLE DEBENTURES DUE MAY 15, 2021 ---------- UNDERWRITING AGREEMENT May 8, 2001 Credit Suisse First Boston Corporation (the "Underwriter") Eleven Madison Avenue, 19th Floor New York, New York 10010-3629 Ladies and Gentlemen: Transocean Sedco Forex Inc., a Cayman Islands exempted company (the "Company"), proposes, subject to the terms and conditions stated herein, to issue and sell to the Underwriter an aggregate of $400,000,000 principal amount of the Company's 1.5% Convertible Debentures Due May 15, 2021, convertible into ordinary shares, par value $.01 ("Ordinary Shares"), of the Company (the "Securities"). 1. The Company represents and warrants to, and agrees with, the Underwriter that: (a) The Securities will be offered and sold under a registration statement on Form S-3 (File No. 333-58604) filed with the Securities and Exchange Commission (the "Commission"); such registration statement and any post-effective amendments thereto, each in the form heretofore delivered or to be delivered to the Underwriter, have been declared effective by the Commission in such form; other than (i) the documents incorporated by reference in the prospectus included therein (which have heretofore been, or will be, delivered to the Underwriter), (ii) the exhibits to such registration statement and such documents and (iii) any prospectuses filed pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the "Act") (which have heretofore been, or will be, delivered to the Underwriter), no document with respect to such registration statement or document incorporated by reference therein has heretofore been filed or transmitted for filing with the Commission; and no stop order suspending the effectiveness of such registration statement has been issued and no proceeding for that purpose has been initiated or threatened by the Commission (any preliminary prospectus included in such registration statement or filed with the Commission pursuant to Rule 424(a) under the Act, is hereinafter called a "Preliminary Prospectus"); the various parts of such registration statement, including all exhibits thereto and the documents incorporated by reference in the prospectus contained in the registration statement at the time

2 such part of the registration statement became effective but excluding Form T-1, each as amended at the time such part of the registration statement became effective, are hereinafter collectively called the "Registration Statement"; the prospectus relating to the Securities, in the form in which it has most recently been filed, or transmitted for filing, with the Commission on or prior to the date of this Underwriting Agreement (the "Agreement"), being hereinafter called the "Prospectus"; any reference herein to any Preliminary Prospectus or the Prospectus shall be deemed to refer to and include the documents incorporated by reference therein pursuant to the applicable form under the Act, as of the date of such Preliminary Prospectus or the Prospectus, as the case may be; any reference to any amendment or supplement to any Preliminary Prospectus or the Prospectus shall be deemed to refer to and include any documents filed after the date of such Preliminary Prospectus or Prospectus, as the case may be, under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and incorporated by reference in such Preliminary Prospectus or Prospectus, as the case may be; any reference to any amendment to the Registration Statement shall be deemed to refer to and include any annual report of the Company filed pursuant to Sections 13(a) or 15(d) of the Exchange Act after the effective date of the Registration Statement that is incorporated by reference in the Registration Statement; and any reference to the Prospectus as amended or supplemented shall be deemed to refer to the Prospectus as amended or supplemented in relation to the Securities in the form in which it is filed with the Commission pursuant to Rule 424(b) under the Act in accordance with Section 5(a) hereof, including any documents incorporated by reference therein as of the date of such filing); (b) The documents incorporated by reference in the Prospectus, when they became effective or were filed with the Commission, as the case may be, conformed in all material respects to the requirements of the Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder, and none of such documents contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading; and any further documents so filed and incorporated by reference in the Prospectus or any further amendment or supplement thereto, when such documents become effective or are filed with the Commission, as the case may be, will conform in all material respects to the requirements of the Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by the Underwriter expressly for use in the Prospectus as amended or supplemented relating to the Securities; (c) The Registration Statement and the Prospectus conform, and any further amendments or supplements to the Registration Statement or the Prospectus will conform, in all material respects to the requirements of the Act and the Trust Indenture Act of 1939, as amended (the "Trust Indenture Act"), and the rules and regulations of the Commission thereunder and do not and will not, as of the applicable effective date as to the Registration Statement and any amendment thereto and as of the applicable filing date as to the Prospectus and any amendment or supplement thereto, contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; provided, however, that this representation and 2

3 warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by the Underwriter expressly for use in the Prospectus as amended or supplemented relating to the Securities; (d) Neither the Company nor any of its subsidiaries has sustained since the date of the latest audited financial statements incorporated by reference in the Prospectus any material loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or decree, otherwise than as set forth or contemplated in the Prospectus as amended or supplemented, except for losses or interferences that would not, individually or in the aggregate, have a material adverse effect on the general affairs, management, financial position, shareholders' equity or results of operations of the Company and its subsidiaries considered as one enterprise (a "Material Adverse Effect"); and, since the respective dates as of which information is given in the Prospectus, there has not been any change in the share capital or capital stock (other than pursuant to any employee benefit plans of the Company) or increase in long-term debt of the Company or any of its subsidiaries or any change that would have a Material Adverse Effect, or any development involving a prospective change that, to the best knowledge of the Company, would reasonably be expected to have a Material Adverse Effect, otherwise than as set forth or contemplated in the Prospectus as amended or supplemented; (e) The Company has been duly incorporated and is validly existing as an exempted company in good standing under the laws of the Cayman Islands, with power and authority (corporate and other) to own its properties and conduct its business as described in the Prospectus, and has been duly qualified as a foreign corporation for the transaction of business and is in good standing under the laws of each other jurisdiction in which it owns or leases properties, or conducts any business, so as to require such qualification, except where the failure to be so qualified would not have a Material Adverse Effect; and each subsidiary of the Company listed on Exhibit A hereto has been duly organized, is validly existing and in good standing (if applicable) under the laws of its jurisdiction of organization; (f) The Ordinary Shares of the Company into which the Securities are convertible will have been approved for listing on the New York Stock Exchange, subject to notice of issuance prior to the Time of Delivery (as defined in Section 4(a)); (g) The Company has an authorized capitalization as set forth in the Prospectus, and all of the issued shares of the Company have been duly and validly authorized and issued and are fully paid and non-assessable; (h) The Securities have been duly authorized and, when issued and delivered pursuant to this Agreement, will have been duly executed, authenticated, issued and delivered and will constitute valid and legally binding obligations of the Company entitled to the benefits provided by the indenture, dated April 15, 1997 (the "Original Indenture"), between Transocean Offshore Inc., the predecessor to the Company, and Texas Commerce Bank National Association (the predecessor to The Chase Manhattan Bank), as trustee (the "Trustee"), as amended and supplemented by the First Supplemental Indenture, Second Supplemental Indenture and Third Supplemental Indenture, dated April 15, 1997, May 14, 1999 and May 24, 2000, respectively, and as further amended and supplemented by the 3

4 Fourth Supplemental Indenture to be dated the date of the Time of Delivery (the "Fourth Supplemental Indenture") relating to the Securities (the Original Indenture as so amended and supplemented, the "Indenture"), under which they are to be issued; the Indenture has been duly authorized, executed and delivered by the Company and the Trustee, has been duly qualified under the Trust Indenture Act, and at the Time of Delivery will constitute a valid and legally binding instrument, enforceable in accordance with its terms, except as the enforceability thereof may be subject to the effect of any bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium and other laws of general applicability relating to or affecting creditors' rights and to general principles of equity and public policy (regardless of whether enforcement is sought in a proceeding at law or in equity) and to the discretion of the court before which any proceeding may be brought; and the Securities will conform, and the Indenture conforms, in all material respects to the descriptions thereof in the Prospectus as amended or supplemented; (i) When the Securities are delivered and paid for pursuant to this Agreement they will be convertible into Ordinary Shares in accordance with the terms of the Indenture; the Ordinary Shares initially issuable upon conversion of such Securities have been duly authorized and reserved for issuance upon such conversion and, when issued upon such conversion, will be validly issued, fully paid and nonassessable; the outstanding Ordinary Shares have been duly authorized and validly issued, are fully paid and nonassessable; and the shareholders of the Company have no preemptive rights with respect to the Ordinary Shares. (j) The issue and sale of the Securities and the compliance by the Company with all of the provisions of the Securities, the Indenture and this Agreement and the consummation of the transactions herein and therein contemplated will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject, nor will such action result in any violation of the provisions of the Memorandum and Articles of Association of the Company or any statute or any order, rule or regulation of any court or governmental agency or body having jurisdiction over the Company or any of its subsidiaries or any of their properties, except, in each case other than with respect to such Memorandum and Articles of Association, for any such conflict, breach, violation or default which would not, individually or in the aggregate, have a Material Adverse Effect and would not impair the Company's ability to perform its obligations hereunder or under the Securities or the Indenture or have any material adverse effect upon the consummation of the transactions contemplated hereby and thereby; and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required for the issue and sale of the Securities or the consummation by the Company of the transactions contemplated by this Agreement or the Indenture, except for such consents, approvals, authorizations, registrations or qualifications as (i) have been, or will have been prior to the Time of Delivery, obtained under the Act or the Trust Indenture Act or (ii) may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the Securities by the Underwriter; 4

5 (k) Neither the Company nor any of its subsidiaries is in violation of its Memorandum and Articles of Association or its Certificate of Incorporation or By-laws, as the case may be, or in default in the performance or observance of any material obligation, covenant or condition contained in any indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which it is a party or by which it or any of its properties may be bound, except for any such violation or default which would not, individually or in the aggregate, have a Material Adverse Effect; (l) The statements set forth in the Prospectus under the captions "Description of the Debentures", "Description of Debt Securities", "Description of Share Capital" and "Description of Ordinary Shares", insofar as they purport to constitute a summary of the terms of the Securities and the Ordinary Shares, and under the captions "Cayman Islands Tax Consequences", "Certain United States Federal Income Tax Considerations", "Underwriting" and "Plan of Distribution", insofar as they purport to describe the provisions of the laws and documents referred to therein, are accurate, complete and fair in all material respects; (m) Other than as set forth in the Prospectus, there are no legal or governmental proceedings pending to which the Company or any of its subsidiaries is a party or of which any property of the Company or any of its subsidiaries is the subject which, if determined adversely to the Company or any of its subsidiaries, would, individually or in the aggregate, have a Material Adverse Effect; and, to the best of the Company's knowledge, no such proceedings are threatened or contemplated by governmental authorities or threatened by others; (n) The Company is not, and after giving effect to the offering and sale of the Securities, will not be, an "investment company", as such term is defined in the United States Investment Company Act of 1940, as amended (the "Investment Company Act"); (o) This Agreement has been duly authorized, executed and delivered by the Company and constitutes a valid and binding agreement of the Company; (p) Since the end of its latest fiscal year, the Company has timely filed all documents and amendments to previously filed documents required to be filed by it pursuant to Section 13(a), 13(c), 14 and 15(d) of the Exchange Act and the rules and regulations of the Commission thereunder; (q) To the knowledge of the Company, each of Ernst & Young LLP, PricewaterhouseCoopers LLP and Arthur Andersen LLP, who have certified certain financial statements of the Company or its subsidiaries, are independent public accountants as required by the Act, and the rules and regulations of the Commission thereunder; (r) Except as disclosed in the Prospectus as amended or supplemented, under current laws and regulations of the Cayman Islands and any political subdivision thereof, all interest, principal, premium, if any, and other payments due or made on the Securities and dividends and other distributions declared and payable on any Ordinary Shares issuable upon conversion thereof may be paid by the Company to the holder thereof in United States dollars that may be converted into foreign currency and freely transferred out of the Cayman Islands and all such payments made to holders thereof who are non-residents of the Cayman Islands will not be subject to income, withholding or other taxes under laws and regulations of the 5

6 Cayman Islands or any political subdivision or taxing authority thereof or therein and, except for the stamp duty described in the Prospectus as amended or supplemented, will otherwise be free and clear of any other tax, duty, withholding or deduction in the Cayman Islands or any political subdivision or taxing authority thereof or therein and without the necessity of obtaining any governmental authorization in the Cayman Islands or any political subdivision or taxing authority thereof or therein; and (s) Prior to the date hereof, neither the Company nor any of its affiliates has taken any action which is designed to or which has constituted or which might have been expected to cause or result in stabilization or manipulation of the price of any security of the Company in connection with the offering of the Securities; 2. Subject to the terms and conditions herein set forth, the Company agrees to issue and sell to the Underwriter, and the Underwriter agrees to purchase from the Company, at a purchase price of 98.5% of the principal amount thereof plus accrued interest from May 11, 2001 to the Time of Delivery. 3. Upon the authorization by you of the release of the Securities, the Underwriter proposes to offer the Securities for sale upon the terms and conditions set forth in the Prospectus as amended or supplemented. 4. (a) The Securities will be represented by one or more definitive global Securities in book-entry form which will be deposited by or on behalf of the Company with The Depository Trust Company ("DTC") or its designated custodian. The Company will deliver the Securities to the Underwriter, against payment by the Underwriter or on its behalf of the purchase price therefor by wire transfer of Federal (same-day) funds, to the account specified by the Company to the Underwriter at least forty-eight hours in advance of the Time of Delivery, by causing DTC to credit the Securities to the account of the Underwriter at DTC. The Company will cause the certificates representing the Securities to be made available to the Underwriter for checking at least twenty-four hours prior to the Time of Delivery at the office of DTC or its designated custodian (the "Designated Office"). The time and date of such delivery and payment shall be 9:30 a.m., New York City time, on May 11, 2001 or such other time and date as the Underwriter and the Company may agree upon in writing. Such time and date are herein called the "Time of Delivery". (b) The documents to be delivered at the Time of Delivery by or on behalf of the parties hereto pursuant to Section 7 hereof, including the cross-receipt for the Securities and any additional documents requested by the Underwriter pursuant to Section 7(j) hereof, will be delivered at such time and date at the offices of Baker Botts L.L.P., 910 Louisiana, One Shell Plaza, Houston, Texas (the "Closing Location"), and the Securities will be delivered at the Designated Office, all at the Time of Delivery. A meeting will be held at the Closing Location at 5:00 p.m., New York City time, on the New York Business Day immediately preceding the Time of Delivery, at which meeting the final drafts of the documents to be delivered pursuant to the preceding sentence will be available for review by the parties hereto. "New York Business Day" shall mean each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in New York are generally authorized or obligated by law or executive order to close. 5. The Company agrees with the Underwriter: 6

7 (a) To prepare the Prospectus as amended or supplemented in relation to the Securities in a form approved by the Underwriter and to file such Prospectus pursuant to Rule 424(b) under the Act not later than the Commission's close of business on the second business day following the execution and delivery of this Agreement or, if applicable, such earlier time as may be required by Rule 424(b); to make no further amendment or any supplement to the Registration Statement or Prospectus as amended or supplemented after the date hereof and prior to the Time of Delivery which shall be disapproved by the Underwriter promptly after reasonable notice thereof; to advise the Underwriter promptly of any such amendment or supplement after such Time of Delivery and furnish the Underwriter with copies thereof; to file promptly all reports and any definitive proxy or information statements required to be filed by the Company with the Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act for so long as the delivery of a prospectus is required in connection with the offering or sale of the Securities, and during such same period to advise the Underwriter, promptly after it receives notice thereof, of the time when any amendment to the Registration Statement has been filed or becomes effective or any supplement to the Prospectus has been filed with the Commission, of the issuance by the Commission of any stop order or of any order preventing or suspending the use of any prospectus relating to the Securities, of the suspension of the qualification of the Securities for offering or sale in any jurisdiction, of the initiation or threatening of any proceeding for any such purpose, or of any request by the Commission for the amending or supplementing of the Registration Statement or Prospectus or for additional information; and, in the event of the issuance of any such stop order or of any such order preventing or suspending the use of any prospectus relating to the Securities or suspending any such qualification, to promptly use its best efforts to obtain the withdrawal of such order; (b) To promptly from time to time take such action as the Underwriter may reasonably request to qualify the Securities for offering and sale under the securities laws of such jurisdictions as the Underwriter may request and to comply with such laws so as to permit the continuance of sales and dealings therein in such jurisdictions for as long as may be necessary to complete the distribution of the Securities; provided that in connection therewith the Company shall not be required to qualify as a foreign corporation or to file a general consent to service of process in any jurisdiction; (c) Prior to 3:00 P.M., New York City time, on the New York Business Day next succeeding the date of this Agreement and from time to time, to furnish the Underwriter with copies of the Prospectus as amended or supplemented in such quantities as the Underwriter may from time to time reasonably request, and if, at any time prior to the expiration of nine months after the date of the Prospectus Supplement, the delivery of a prospectus is required in connection with the offering or sale of the Securities and if at such time any event shall have occurred as a result of which the Prospectus as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made when such Prospectus is delivered, not misleading, or, if for any other reason it shall be necessary during such same period to amend or supplement the Prospectus or to file under the Exchange Act any document incorporated by reference in the Prospectus in order to comply with the Act, the Exchange Act or the Trust Indenture Act, to notify the Underwriter and upon its request to file such document and to prepare and furnish without charge to the Underwriter as many copies as the Underwriter may from time to time reasonably request of 7

8 an amended Prospectus or a supplement to the Prospectus which will correct such statement or omission or effect such compliance (it being understood that (i) the Company is not required to so notify the Underwriter, if the Underwriter has previously notified the Company that it has completed its resale of the Securities purchased by it hereunder and that (ii) it would not be reasonable for the Underwriter to request any such copies if the Underwriter has completed its resale of the Securities purchased by it hereunder), and if at any time on or after the expiration of nine months after the date of the Prospectus Supplement, the Underwriter is required to deliver a prospectus in connection with the offering or sale of any of the Securities, upon the request but at the expense of the Underwriter, to prepare and furnish to the Underwriter as many copies as the Underwriter may request of an amended Prospectus or a supplemented Prospectus complying with Section 10(a)(3) of the Act; (d) To make generally available to its securityholders as soon as practicable, but in any event not later than eighteen months after the effective date of the Registration Statement (as defined in Rule 158(c) under the Act), an earnings statement of the Company and its subsidiaries (which need not be audited) complying with Section 11(a) of the Act and the rules and regulations of the Commission thereunder (including, at the option of the Company, Rule 158); and (e) To not offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, or file with the Commission a registration statement under the Act relating to, any additional Ordinary Shares or securities convertible into or exchangeable or exercisable for any Ordinary Shares (other than the Securities), or publicly disclose the intention to make any such offer, sale, pledge, disposition or filing, without the prior written consent of the Underwriter for a period beginning at the time of execution of this Agreement and ending upon the expiration of 90 days after the date of this Agreement, except for grants of employee or director stock options, stock appreciation rights or restricted stock grants pursuant to the terms of a plan in effect on the date of this Agreement, issuances of Ordinary Shares pursuant to the exercise of such options or the exercise or conversion of any other options, warrants or convertible securities outstanding on the date of this Agreement or pursuant to a Company savings plan. Notwithstanding the preceding provisions, the Company shall be permitted to take any of the foregoing actions in connection with any merger or acquisition. 6. The Company covenants and agrees with the Underwriter that the Company will pay or cause to be paid the following: (i) the fees, disbursements and expenses of the Company's counsel and accountants in connection with the issue of the Securities and all other expenses in connection with the preparation, printing and filing of the Registration Statement and the Prospectus and any amendments and supplements thereto and the mailing and delivering of copies thereof to the Underwriter and dealers; (ii) the cost of printing or producing this Agreement, the Indenture, any Blue Sky and legal investment surveys, closing documents (including any compilations thereof) and any other documents in connection with the offering, purchase, sale and delivery of the Securities; (iii) all expenses in connection with the qualification of the Securities for offering and sale under state securities laws as provided in Section 5(b) hereof, including the fees and disbursements of counsel for the Underwriter in connection with such qualification and in connection with the Blue Sky and legal investment surveys; (iv) any fees charged by securities rating services for rating the Securities; (v) any filing fees incident to, and the fees and disbursements of counsel for the Underwriter in connection with, any required review by the National Association of Securities Dealers, Inc. of the terms of the sale of the Securities; (vi) the cost of preparing the Securities; (vii) the fees and expenses 8

9 of the Trustee and any agent of the Trustee and the fees and disbursements of counsel for the Trustee in connection with the Indenture and the Securities; and (viii) all other costs and expenses incident to the performance of its obligations hereunder which are not otherwise specifically provided for in this Section. It is understood, however, that, except as provided in this Section, and Sections 8 and 11 hereof, the Underwriter will pay all of its own costs and expenses, including the fees of its counsel, transfer taxes on resale of any of the Securities by it, and any advertising expenses connected with any offers it may make. 7. The obligations of the Underwriter hereunder shall be subject, in its discretion, to the condition that all representations and warranties and other statements of the Company herein are, at and as of the Time of Delivery, true and correct, the condition that the Company shall have performed in all material respects all of its obligations hereunder theretofore to be performed, and the following additional conditions: (a) The Prospectus as amended or supplemented in relation to the Securities shall have been filed with the Commission pursuant to Rule 424(b) within the applicable time period prescribed for such filing by the rules and regulations under the Act and in accordance with Section 5(a) hereof; no stop order suspending the effectiveness of the Registration Statement or any part thereof shall have been issued and no proceeding for that purpose shall have been initiated or threatened by the Commission; and all requests for additional information on the part of the Commission shall have been complied with to the Underwriter's reasonable satisfaction; (b) Sullivan & Cromwell, counsel for the Underwriter, shall have furnished to you such opinion or opinions, dated the Time of Delivery, with respect to the matters covered in paragraphs (i), (ii), (vii), (viii) and the third to last paragraph of subsection (d) below as well as such other related matters as you may reasonably request, and such counsel shall have received such papers and information as they may reasonably request to enable them to pass upon such matters; (c) Walkers, special Cayman Islands counsel to the Company, shall have furnished to you their written opinion, dated the Time of Delivery, in form and substance satisfactory to you, to the effect that: (i) The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the Cayman Islands, with power and authority (corporate and other) to own its properties and conduct its business as described in the Prospectus as amended or supplemented; (ii) The Company has an authorized capitalization as set forth in the Prospectus as amended or supplemented; (iii) Each of this Agreement, the Second Supplemental Indenture, the Third Supplemental Indenture and the Fourth Supplemental Indenture to the Original Indenture has been duly authorized by the Company, and assuming its due execution and delivery by the Company insofar as such matters are governed by New York law, will be duly executed and delivered by the Company; 9

10 (iv) The Securities have been duly authorized by the Company, and assuming their due execution and delivery by the Company insofar as such matters are governed by New York law, and further assuming their issuance and authentication in accordance with the terms of the Indenture, the Securities will be duly executed and delivered by the Company; (v) The Ordinary Shares initially issuable upon conversion of the Securities have been duly authorized and reserved for issuance by the Company upon such conversion and, when issued upon such conversion, will be validly issued, fully paid and nonassessable; the outstanding Ordinary Shares have been duly authorized and validly issued, are fully paid and nonassessable; and the shareholders of the Company have no preemptive rights with respect to the Ordinary Shares; (vi) The issue and sale of the Securities and the compliance by the Company with all of the provisions of the Securities, the Indenture and this Agreement and the consummation of the transactions herein and therein contemplated will not result in any violation of the Memorandum and Articles of Association of the Company or any statute or any order, rule or regulation of any court or governmental agency or body in the Cayman Islands having jurisdiction over the Company or any of its subsidiaries or any of their properties; (vii) No consent, approval, authorization, order, registration or qualification of or with any court or governmental agency or body in the Cayman Islands is required for the issue and sale of the Securities or the consummation by the Company of the transactions contemplated by this Agreement or the Indenture; and (viii) The statements set forth in the Prospectus under the caption "Description of Share Capital", "Description of Ordinary Shares" and "Description of Preference Shares", insofar as they purport to constitute a summary of the terms of the Ordinary Shares and any preference shares, respectively, and "Cayman Islands Tax Consequences", insofar as they purport to describe the provisions of the laws and documents referred to therein, are accurate, complete and fair in all material respects; (d) Baker Botts L.L.P., United States counsel for the Company, shall have furnished to you their written opinion, dated the Time of Delivery, in form and substance satisfactory to you, to the effect that: (i) Each of the Original Indenture and the First Supplemental Indenture thereto has been duly authorized, executed and delivered by Transocean Offshore Inc., a Delaware corporation; each of the Second Supplemental Indenture, the Third Supplemental Indenture and the Fourth Supplemental Indenture to the Original Indenture, assuming its due authorization, and further assuming its due execution and delivery by the Company insofar as such matters are governed by Cayman Islands law, has been duly executed and delivered by the Company; and the Indenture, assuming the due authorization, execution and delivery thereof by the trustee thereunder, further assuming the due authorization of the Second Supplemental Indenture, the Third Supplemental Indenture and the Fourth Supplemental Indenture 10

11 thereto by the Company, and further assuming the due execution and delivery of the Second Supplemental Indenture, the Third Supplemental Indenture and the Fourth Supplemental Indenture thereto by the Company insofar as such matters are governed by Cayman Islands law, constitutes a valid and legally binding agreement of the Company, enforceable against the Company in accordance with its terms, except as the enforceability thereof may be subject to the effect of any bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium and other laws of general applicability relating to or affecting creditors' rights and to general principles of equity and public policy (regardless of whether enforcement is sought in a proceeding at law or in equity) and to the discretion of the court before which any proceeding may be brought; (ii) The Securities have been duly authenticated and issued pursuant to the Indenture, and assuming their due authorization, and further assuming their due execution and delivery by the Company insofar as such matters are governed by Cayman Islands law, have been duly executed and delivered by the Company and constitute valid and legally binding obligations of the Company, enforceable against the Company in accordance with their terms, except as the enforceability thereof may be subject to the effect of any bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium and other laws of general applicability relating to or affecting creditors' rights and to general principles of equity and public policy (regardless of whether enforcement is sought in a proceeding at law or in equity) and to the discretion of the court before which any proceeding may be brought; and the Securities and the Indenture conform in all material respects to the descriptions thereof in the Prospectus as amended or supplemented; (iii) This Agreement, assuming its due authorization, and further assuming its due execution and delivery by the Company insofar as such matters are governed by Cayman Islands law, has been duly executed and delivered by the Company; (iv) When the Securities are delivered and paid for pursuant to this Agreement, they will be convertible into Ordinary Shares in accordance with the terms of the Indenture; (v) The issue and sale of the Securities and the compliance by the Company with all of the provisions of the Securities, the Indenture and this Agreement and the consummation of the transactions herein and therein contemplated will not conflict with or result in a breach or violation of any of the terms of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument that is included as an exhibit to the Company's Annual Report on Form 10-K for the year ended December 31, 2000, nor will such actions result in any violation of any statute, rule or regulation or any order known to such counsel of any court or governmental agency or body having jurisdiction over the Company or any of its subsidiaries or any of their properties, except for any such conflict, breach, violation or default which would not, individually or in the aggregate, have a Material Adverse Effect and could not reasonably be expected to adversely affect the Company's ability to perform its obligations hereunder or under the Securities or the Indenture (it being understood that for purposes of this opinion, such counsel shall not 11

12 be required to pass upon compliance with respect to antifraud or similar provisions of any law, rule or regulation); (vi) No consent, approval, authorization, order, registration or qualification of or with any court or governmental agency or body which, to the best of such counsel's knowledge, has jurisdiction over the Company or any of its subsidiaries or any of their properties is required under the laws of the State of New York or the State of Texas for the issue and sale of the Securities or the consummation by the Company of the transactions contemplated by this Agreement or the Indenture, except for such consents, approvals, authorizations, registrations or qualifications as (i) have been obtained under the Act and the Trust Indenture Act or (ii) may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the Securities by the Underwriter; (vii) The statements set forth in the Prospectus as amended or supplemented under the captions "Description of the Debentures" and "Description of Debt Securities", insofar as they purport to constitute a summary of the terms of the Securities, and "Plan of Distribution", "Certain United States Federal Income Tax Considerations" and "Underwriting", insofar as they purport to constitute a summary of the provisions of the laws and documents referred to therein, are accurate in all material respects; (viii) The Company is not an "investment company", as such term is defined in the Investment Company Act; and (ix) The Registration Statement and the Prospectus as amended or supplemented and any further amendments and supplements thereto made by the Company prior to the Time of Delivery (other than the financial statements and schedules, the notes thereto and the auditors' report thereon and other financial and accounting data included or incorporated by reference therein, or omitted therefrom, as to which such counsel need express no opinion), when they became effective or were filed with the Commission, as the case may be, appeared on their face to comply as to form in all material respects with the requirements of the Act and the Trust Indenture Act and the rules and regulations thereunder. In addition, such counsel shall state that such counsel has participated in conferences with officers and other representatives of the Company, representatives of the independent public accountants for the Company and representatives of and counsel for the Underwriter at which the contents of the Registration Statement and the Prospectus and related matters were discussed and, although such counsel did not independently verify such information and is not passing upon and does not assume any responsibility for the accuracy, completeness or fairness of the statements contained in the Registration Statement or the Prospectus, except for those referred to in the opinion in subsection (vii) of this Section 7(d), on the basis of the foregoing (relying as to materiality to a certain extent upon the statements of the officers and other representatives of the Company), no facts have come to such counsel's attention that would lead such counsel to believe that, as of its effective date, the Registration Statement or any further amendment thereto made by the Company prior to the Time of Delivery (other than 12

13 the financial statements and schedules, the notes thereto and the auditors' report thereon and other financial and accounting data included or incorporated by reference therein, or omitted therefrom, or the exhibits thereto or the Form T-1, as to which such counsel need express no opinion) contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading or that, as of its date, the Prospectus as amended or supplemented or any further amendment or supplement thereto made by the Company prior to the Time of Delivery (other than the financial statements and schedules, the notes thereto and the auditors' report thereon and other financial and accounting data included or incorporated by reference therein, or omitted therefrom, as to which such counsel need express no opinion) contained an untrue statement of a material fact or omitted to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; In the foregoing, phrases such as "to the best of such counsel's knowledge", "known to such counsel" and those with equivalent wording shall refer to the conscious awareness of information by the lawyers who have prepared the opinion, signed the opinion or been actively involved in assisting or advising the Company in connection with the preparation of the Prospectus as amended or supplemented or related documents. Such counsel may rely as to matters of Cayman Islands law upon the opinion of Walkers furnished pursuant to Section 7(c) of this Agreement. Such counsel may limit the foregoing opinions in all respects to the laws of the State of Texas and the State of New York and applicable Federal law, in each case as in effect on the date of such opinions; (e) Eric B. Brown, Senior Vice President, General Counsel and Corporate Secretary of the Company, shall have furnished to you his written opinion, dated the Time of Delivery, in form and substance satisfactory to you, to the effect that: (i) To the best of such counsel's knowledge, neither the Company nor any of its subsidiaries is in default in the performance or observance of any material obligation, covenant or condition contained in any indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which it is a party or by which it is bound or to which any of its property or assets is subject, except for any such defaults which would not, individually or in the aggregate, have a Material Adverse Effect; (ii) To the best of such counsel's knowledge and other than as set forth in the Prospectus as amended or supplemented, there are no legal or governmental proceedings pending to which the Company or any of its subsidiaries is a party or of which any property of the Company or any of its subsidiaries is the subject which, if determined adversely to the Company or any of its subsidiaries, would, individually or in the aggregate, have a Material Adverse Effect; and, to the best of such counsel's knowledge, no such proceedings are threatened or contemplated by governmental authorities or threatened by others; (iii) The issue and sale of the Securities and the compliance by the Company with all of the provisions of the Securities, the Indenture and this Agreement 13

14 and the consummation of the transactions herein and therein contemplated will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument known to such counsel (after reasonable inquiry) to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject, except for any such conflict, breach, violation or default which would not, individually or in the aggregate, have a Material Adverse Effect and would not impair the Company's ability to perform its obligations hereunder or under the Securities or the Indenture or have any material adverse effect upon the consummation of the transactions contemplated hereby and thereby; and (iv) The documents incorporated by reference in the Prospectus as amended or supplemented (other than the financial statements and schedules, the notes thereto and the auditors' report thereon and other financial and accounting data included or incorporated by reference therein, or omitted therefrom, as to which such counsel need express no opinion), when they were filed with the Commission appeared on their face to comply as to form in all material respects with the requirements of the Exchange Act and the rules and regulations of the Commission thereunder. In addition, such counsel shall state that such counsel has participated in conferences with officers and other representatives of the Company, representatives of the independent public accountants for the Company and representatives of and counsel for the Underwriter at which the contents of the Registration Statement and the Prospectus and related matters were discussed and, although such counsel did not independently verify such information and is not passing upon and does not assume any responsibility for the accuracy, completeness or fairness of the statements contained in the Registration Statement or the Prospectus, on the basis of the foregoing (relying as to materiality to a certain extent upon the statements of the officers and other representatives of the Company), no facts have come to such counsel's attention that would lead such counsel to believe that, as of its effective date, the Registration Statement or any further amendment thereto made by the Company prior to the Time of Delivery (other than the financial statements and schedules, the notes thereto and the auditors' report thereon and other financial and accounting data included or incorporated by reference therein, or omitted therefrom, or the exhibits thereto or the Form T-1, as to which such counsel need express no opinion) contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading or that, as of its date, the Prospectus as amended or supplemented or any further amendment or supplement thereto made by the Company prior to the Time of Delivery (other than the financial statements and 14

15 schedules, the notes thereto and the auditors' report thereon and other financial and accounting data included or incorporated by reference therein, or omitted therefrom, as to which such counsel need express no opinion) contained an untrue statement of a material fact or omitted to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading or that, as of the Time of Delivery, either the Registration Statement or the Prospectus as amended or supplemented or any further amendment or supplement thereto made by the Company prior to the Time of Delivery (other than the financial statements and schedules, the notes thereto and the auditors' report thereon and other financial and accounting data included or incorporated by reference therein, or omitted therefrom, as to which such counsel need express no opinion) contains an untrue statement of a material fact or omits to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; and such counsel does not know of any amendment to the Registration Statement required to be filed or any contracts or other documents of a character required to be filed as an exhibit to the Registration Statement or required to be incorporated by reference into the Prospectus as amended or supplemented or required to be described in the Registration Statement or the Prospectus as amended or supplemented which are not filed or incorporated by reference or described as required; Such counsel may rely as to matters of Cayman Islands law upon the opinion of Walkers furnished pursuant to Section 7(b) of this Agreement. Such counsel may limit the foregoing opinions in all respects to the laws of the State of Texas and applicable Federal law, in each case as in effect on the date of such opinions; (f) On the date of the Prospectus prior to the execution of this Agreement and also at the Time of Delivery, Ernst & Young LLP, PricewaterhouseCoopers LLP and Arthur Andersen LLP shall have furnished to you a letter or letters, dated the respective dates of delivery thereof, in form and substance agreed by you prior to the execution of this Agreement; (g) (i) Neither the Company nor any of its subsidiaries shall have sustained since the date of the latest audited financial statements incorporated by reference in the Prospectus as amended prior to the date hereof any loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or decree, that would, individually or in the aggregate, have a Material Adverse Effect, otherwise than as set forth or contemplated in the Prospectus as amended prior to the date hereof, and (ii) since the respective dates as of which information is given in the Prospectus as amended prior to the date hereof, there shall not have been any change in the share capital or capital stock (other than pursuant to any employee benefit plans of the Company) or increase in long-term debt of the Company or any of its subsidiaries or any change that would have a Material Adverse Effect, or any development involving a prospective change that would have a Material Adverse Effect, otherwise than as set forth or contemplated in the Prospectus as amended prior to the date hereof, the effect of which, in any such case described in clause (i) or (ii), is in the reasonable judgment of the Underwriter so material and adverse as to make it impracticable or inadvisable to proceed with the public offering or the delivery of the Securities on the terms and in the manner contemplated in this Agreement and in the Prospectus as amended or supplemented relating to the Securities; (h) On or after the date hereof (i) no downgrading shall have occurred in the rating accorded the Company's debt securities by any "nationally recognized statistical rating organization", as that term is defined by the Commission for purposes of Rule 436(g)(2) under the Act, and (ii) no such organization shall have publicly announced that it has under surveillance or review, with possible negative implications, its rating of any of the Company's debt securities; 15

16 (i) On or after the date hereof there shall not have occurred any of the following: (i) a suspension or material limitation in trading in securities generally on the New York Stock Exchange; (ii) a suspension or material limitation in trading in the Company's securities on the New York Stock Exchange; (iii) a general moratorium on commercial banking activities declared by either Federal or New York State authorities; or (iv) the outbreak or escalation of hostilities involving the United States or the declaration by the United States of a national emergency or war, if the effect of any such event specified in this clause (iv) in the reasonable judgment of the Underwriter makes it impracticable or inadvisable to proceed with the public offering or the delivery of the Securities on the terms and in the manner contemplated in the Prospectus as amended or supplemented relating to the Securities; and (j) The Company shall have furnished or caused to be furnished to you at the Time of Delivery a certificate or certificates of officers of the Company satisfactory to you as to the accuracy of the representations and warranties of the Company herein at and as of such Time of Delivery, as to the performance by the Company of all of its obligations hereunder to be performed at or prior to such Time of Delivery, as to the matters set forth in subsections (a) and (g) of this Section and as to such other matters as you may reasonably request. 8. (a) The Company will indemnify and hold you harmless against any losses, claims, damages or liabilities, joint or several, to which you may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or the Prospectus as amended or supplemented, or any amendment or supplement thereto, or arise out of or are based upon the omission or alleged omission to state therein a material fact necessary to make the statements therein not misleading, and will reimburse you for any legal or other expenses reasonably incurred by you in connection with investigating or defending any such action or claim as such expenses are incurred; provided, however, that the Company shall not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made in the Registration Statement or the Prospectus as amended or supplemented, or any such amendment or supplement in reliance upon and in conformity with written information furnished to the Company by you expressly for use therein. (b) You will indemnify and hold harmless the Company against any losses, claims, damages or liabilities to which the Company may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or the Prospectus as amended or supplemented or any amendment or supplement thereto, or arise out of or are based upon the omission or alleged omission to state therein a material fact necessary to make the statements therein not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Registration Statement or the Prospectus as amended or supplemented or any such amendment or supplement in reliance upon and in conformity with written information furnished to the Company by you expressly for use therein; and will reimburse the Company for any legal or other expenses reasonably incurred by the Company in connection with investigating or defending any such action or claim as such expenses are incurred. 16

17 (c) Promptly after receipt by an indemnified party under subsection (a) or (b) above of notice of the commencement of any action, such indemnified party shall, if a claim in respect thereof is to be made against the indemnifying party under such subsection, notify the indemnifying party in writing of the commencement thereof; but the omission so to notify the indemnifying party shall not relieve it from any liability which it may have to any indemnified party otherwise than under such subsection, except to the extent that the indemnifying party suffers actual prejudice as a result of such failure. In case any such action shall be brought against any indemnified party and it shall notify the indemnifying party of the commencement thereof, the indemnifying party shall be entitled to participate therein and, to the extent that it shall wish, jointly with any other indemnifying party similarly notified, to assume the defense thereof, with counsel satisfactory to such indemnified party (who shall not, except with the consent of the indemnified party, be counsel to the indemnifying party), and, after notice from the indemnifying party to such indemnified party of its election so to assume the defense thereof, the indemnifying party shall not be liable to such indemnified party under such subsection for any legal expenses of other counsel or any other expenses, in each case subsequently incurred by such indemnified party, in connection with the defense thereof other than reasonable costs of investigation. No indemnifying party shall, without the written consent of the indemnified party, effect the settlement or compromise of, or consent to the entry of any judgment with respect to, any pending or threatened action or claim in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified party is an actual or potential party to such action or claim) unless such settlement, compromise or judgment (i) includes an unconditional release of the indemnified party from all liability arising out of such action or claim and (ii) does not include a statement as to, or an admission of, fault, culpability or a failure to act, by or on behalf of any indemnified party. (d) If the indemnification provided for in this Section 8 is unavailable to or insufficient to hold harmless an indemnified party under subsection (a) or (b) above in respect of any losses, claims, damages or liabilities (or actions in respect thereof) referred to therein, then, except to the extent (but only to the extent) that the indemnifying party suffers actual prejudice as a result of any failure by the indemnified party to notify the indemnifying party of any action, proceeding or investigation as contemplated by subsection (c) of this Section 8, each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages or liabilities (or actions in respect thereof) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and you on the other from the offering of the Securities. If, however, the allocation provided by the immediately preceding sentence is not permitted by applicable law or if the indemnified party failed to give the notice required under subsection (c) above, then, except to the extent (but only to the extent) that the indemnifying party suffers actual prejudice as a result of any failure by the indemnified party to notify the indemnifying party of any action, proceeding or investigation as contemplated by subsection (c) of this Section 8, each indemnifying party shall contribute to such amount paid or payable by such indemnified party in such proportion as is appropriate to reflect not only such relative benefits but also the relative fault of the Company on the one hand and you on the other in connection with the statements or omissions which resulted in such losses, claims, damages or liabilities (or actions in respect thereof), as well as any other relevant equitable considerations. The relative benefits received by the Company on the one hand and you on the other shall be deemed to be in the same proportion as the total net proceeds from the offering (before deducting expenses) received by the Company bear to the total underwriting discounts and commissions received by you. The relative fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the 17

18 Company on the one hand or you on the other and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The Company and you agree that it would not be just and equitable if contribution pursuant to this subsection (d) were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to above in this subsection (d). The amount paid or payable by an indemnified party as a result of the losses, claims, damages or liabilities (or actions in respect thereof) referred to above in this subsection (d) shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this subsection (d), you shall not be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by you and distributed to investors were offered to investors exceeds the amount of any damages which you have otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. (e) The obligations of the Company under this Section 8 shall be in addition to any liability which the Company may otherwise have and shall extend, upon the same terms and conditions, to each person, if any, who controls you within the meaning of the Act; and the obligations of you under this Section 8 shall be in addition to any liability which you may otherwise have and shall extend, upon the same terms and conditions, to each officer and director of the Company and to each person, if any, who controls the Company within the meaning of the Act. 9. The respective indemnities, agreements, representations, warranties and other statements of the Company and you, as set forth in this Agreement, shall remain in full force and effect, regardless of any investigation (or any statement as to the results thereof) made by or on behalf of you or any controlling person of you, or the Company, or any officer or director or controlling person of the Company, and shall survive delivery of and payment for the Securities. 10. If for any reason, the Securities are not delivered by or on behalf of the Company as provided herein, the Company will reimburse you for all out-of-pocket expenses approved in writing by you, including fees and disbursements of counsel, reasonably incurred by you in making preparations for the purchase, sale and delivery of the Securities, but the Company shall then be under no further liability to you except as provided in Sections 6 and 8 hereof. 11. All statements, requests, notices and agreements hereunder shall be in writing, and if to you shall be delivered or sent by mail to you at Eleven Madison Avenue, New York, New York 10010-3629, Attention: Transaction Advisory Group; and if to the Company shall be delivered or sent by mail, telex or facsimile transmission to the address of the Company set forth in the Prospectus as amended or supplemented, Attention: Secretary. 12. This Agreement shall be binding upon, and inure solely to the benefit of, you, the Company and, to the extent provided in Sections 8 and 10 hereof, the officers and directors of the Company and each person who controls the Company or you, and their respective heirs, executors, administrators, successors and assigns, and no other person shall acquire or have any right under or by virtue of this Agreement. No purchaser of any of the Securities from you shall be deemed a successor or assign by reason merely of such purchase. 13. Time shall be of the essence for this Agreement. 18

19 14. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. 15. This Agreement may be executed by any one or more of the parties hereto in any number of counterparts, each of which shall be deemed to be an original, but all such respective counterparts shall together constitute one and the same instrument. 19

20 If the foregoing is in accordance with your understanding, please sign and return to us counterparts hereof for the Company plus one for each counsel, and upon the acceptance hereof by you, this letter and such acceptance hereof shall constitute a binding agreement between you and the Company. Very truly yours, Transocean Sedco Forex Inc. By: /s/ Robert L. Long ----------------------------------- Name: Robert L. Long Title: Executive Vice President and Chief Financial Officer Accepted as of the date hereof: Credit Suisse First Boston Corporation By: /s/ Rome G. Arnold -------------------------- Name: Rome G. Arnold Title: Managing Director 20

21 EXHIBIT A COMPANY NAME JURISDICTION - ------------ ------------ Transocean Offshore Deepwater Drilling Inc. Delaware Transocean Offshore International Ventures Ltd. Cayman Islands Sedco Forex Holdings Ltd. British Virgin Islands Sedco Forex International Inc. Panama Transocean Holdings Inc. Delaware R&B Falcon Corporation Delaware R&B Falcon Drilling (International & Deepwater) Inc. Delaware R&B Falcon Drilling Co. Oklahoma Cliffs Drilling Company Delaware 21

1 EXHIBIT 4.1 ================================================================================ FOURTH SUPPLEMENTAL INDENTURE BETWEEN TRANSOCEAN SEDCO FOREX INC. AND THE CHASE MANHATTAN BANK, AS TRUSTEE --------------- MAY 11, 2001 ================================================================================

2 TABLE OF CONTENTS ARTICLE One THE 2021 DEBENTURES..............................................2 SECTION 101 Designation of 2021 Debentures; Establishment of Form.......2 SECTION 102 Amount......................................................3 SECTION 103 Interest....................................................3 SECTION 104 Additional Amounts..........................................3 SECTION 105 Denominations...............................................3 SECTION 106 Place of Payment............................................3 SECTION 107 Redemption..................................................4 SECTION 108 Conversion..................................................4 SECTION 109 Maturity....................................................4 SECTION 110 Repurchase..................................................4 SECTION 111 Discharge of Liability on 2021 Debentures...................4 SECTION 112 Other Terms of 2021 Debentures..............................4 ARTICLE Two AMENDMENTS TO THE INDENTURE......................................5 SECTION 201 Definitions.................................................5 SECTION 202 Registration, Registration of Transfer and Exchange.........7 SECTION 203 Mutilated, Destroyed, Lost and Stolen Securities............8 SECTION 204 Payment of Interest; Interest Rights Preserved..............8 SECTION 205 Satisfaction and Discharge of Indenture.....................8 SECTION 206 Discharge of Liability on Securities of Any Series..........9 SECTION 207 Unconditional Right of Holders to Receive Principal, Premium and Interest........................................9 SECTION 208 Consolidation, Merger and Sale..............................9 SECTION 209 Supplemental Indentures Without Consent of Holders..........9 SECTION 210 Supplemental Indenture with Consent of Holder..............10 SECTION 211 Maintenance of Office or Agency............................10 SECTION 212 Redemption.................................................10 SECTION 213 Conversion, Repurchase.....................................16 SECTION 214 Amendment to Events of Default.............................37 ARTICLE Three MISCELLANEOUS PROVISIONS......................................37 SECTION 301 Integral Part..............................................37 SECTION 302 General Definitions........................................37 SECTION 303 Adoption, Ratification and Confirmation....................38 SECTION 304 Counterparts...............................................38 SECTION 305 Governing Law..............................................38 i

3 TRANSOCEAN SEDCO FOREX INC. FOURTH SUPPLEMENTAL INDENTURE THIS FOURTH SUPPLEMENTAL INDENTURE, dated as of May 11, 2001 (the "Fourth Supplemental Indenture"), between Transocean Sedco Forex Inc. (formerly Transocean Offshore Inc.), a Cayman Islands exempted company limited by shares (the "Company"), and The Chase Manhattan Bank (formerly Texas Commerce Bank National Association) (the "Trustee"). W I T N E S S E T H WHEREAS, the Company has heretofore executed and delivered to the Trustee an Indenture, dated as of April 15, 1997 (as supplemented by the First Supplemental Indenture thereto dated as of April 15, 1997, the Second Supplemental Indenture thereto dated as of May 14, 1999, the Third Supplemental Indenture thereto dated as of May 24, 2000 and this Fourth Supplemental Indenture, the "Indenture"), providing for the issuance from time to time of one or more series of the Company's Securities; WHEREAS, Section 901(5) of the Indenture provides that the Company and the Trustee may from time to time enter into one or more indentures supplemental thereto to establish the form or terms of Securities of a new series; WHEREAS, Section 901(8) of the Indenture provides that the Company and the Trustee may from time to time enter into one or more indentures supplemental thereto to make provision with respect to matters or questions arising under the Indenture which do not adversely affect the interests of the Holders of Securities of any series in any material respect; WHEREAS, Sections 901(2) and 901(3) of the Indenture permit the execution of supplemental indentures without the consent of any Holders to add to the covenants of the Company for the benefit of, and to add any additional Events of Default with respect to, all or any series of Securities; WHEREAS, Section 901(4) of the Indenture permits the execution of supplemental indentures without the consent of any Holders to change or eliminate any of the provisions of the Indenture; provided that such change or elimination does not adversely affect any outstanding Security of any series created prior to the execution of such supplemental indenture; WHEREAS, Section 301 of the Indenture provides that the Company may enter into supplemental indentures to establish the terms and provisions of a series of Securities issued pursuant to the Indenture; WHEREAS, the Company desires to issue 1.5% Convertible Debentures due May 15, 2021 (the "2021 Debentures"), a new series of Security the issuance of which was authorized by or pursuant to resolution of the Board of Directors of the Company;

4 WHEREAS, the Company, pursuant to the foregoing authority, proposes in and by this Fourth Supplemental Indenture to supplement and amend the Indenture insofar as it will apply only to the 2021 Debentures in certain respects; and WHEREAS, all things necessary have been done to make the 2021 Debentures, when executed by the Company and authenticated and delivered hereunder and duly issued by the Company, the valid obligations of the Company, and to make this Fourth Supplemental Indenture a valid agreement of the Company, in accordance with their and its terms. NOW THEREFORE: In consideration of the premises provided for herein, the Company and the Trustee mutually covenant and agree for the equal and proportionate benefit of all Holders of the 2021 Debentures as follows: ARTICLE ONE THE 2021 DEBENTURES SECTION 101 Designation of 2021 Debentures; Establishment of Form. There shall be a series of Securities designated "1.5% Convertible Debentures Due May 15, 2021" of the Company (the "2021 Debentures"), and the form thereof shall be substantially as set forth in Annex A hereto, which is incorporated into and shall be deemed a part of this Fourth Supplemental Indenture, in each case with such appropriate insertions, omissions, substitutions and other variations as are required or permitted by the Indenture, and may have such letters, numbers or other marks of identification and such legends or endorsements placed thereon as may be required to comply with the rules of any securities exchange or as may, consistently herewith, be determined by the officers of the Company executing such 2021 Debentures, as evidenced by their execution of the 2021 Debentures. The 2021 Debentures will initially be issued in permanent global form, substantially in the form set forth in Annex A hereto (the "Global Securities"), as a Book-Entry Security. Each Global Security shall represent such of the Outstanding 2021 Debentures as shall be specified therein and shall provide that it shall represent the aggregate amount of Outstanding 2021 Debentures from time to time endorsed thereon and that the aggregate amount of Outstanding 2021 Debentures represented thereby may from time to time be reduced to reflect exchanges and redemptions. Any endorsement of a Global Security to reflect the amount, or any increase or decrease in the amount, of Outstanding 2021 Debentures represented thereby shall be made by the Trustee in accordance with written instructions or such other written form of instructions as is customary for the Depositary, from the Depositary or its nominee on behalf of any Person having the beneficial interest in the Global Security. The Company initially appoints The Depository Trust Company to act as Depositary with respect to the Global Securities. The Company initially appoints the Trustee to act as Paying Agent and Conversion Agent with respect to the 2021 Debentures. 2

5 SECTION 102 Amount. (a) The Trustee shall authenticate and deliver 2021 Debentures for original issue in an aggregate Principal Amount of up to $400,000,000 upon Company Order for the authentication and delivery of 2021 Debentures, without any further action by the Company. The aggregate Principal Amount of 2021 Debentures that may be authenticated and delivered under the Indenture may not exceed the amount set forth in the foregoing sentence, except for 2021 Debentures authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other 2021 Debentures pursuant to Section 204, 304, 305, 306, 906 or 1107 of the Indenture. (b) The Company may not issue new 2021 Debentures to replace 2021 Debentures that it has paid or delivered to the Trustee for cancellation or that any Holder has converted pursuant to Article Fourteen. SECTION 103 Interest. The 2021 Debentures shall bear interest at the rate set forth under the caption "Interest" in the 2021 Debentures, commencing on the Issue Date of the 2021 Debentures. Interest on the 2021 Debentures shall be payable to the persons in whose name the 2021 Debentures are registered at the close of business on the Regular Record Date for such interest payment. The date from which interest shall accrue for each 2021 Debenture shall be May 11, 2001. The Interest Payment Dates on which interest on the 2021 Debentures shall be payable are May 15 and November 15, commencing on November 15, 2001. The Regular Record Dates for the interest payable on the 2021 Debentures on any Interest Payment Date shall be May 1 or November 1, as the case may be, immediately preceding such Interest Payment Date. SECTION 104 Additional Amounts. Additional Amounts with respect to the 2021 Debentures shall be payable in accordance with the provisions and in the amounts set forth under the caption "Tax Additional Amounts" in the 2021 Debentures and in accordance with the provisions of the Indenture. SECTION 105 Denominations. The 2021 Debentures shall be in fully registered form without coupons in denominations of $1,000 of Principal Amount or any integral multiple thereof. SECTION 106 Place of Payment. The Place of Payment for the 2021 Debentures and the place or places where the principal of and interest on the 2021 Debentures shall be payable, the 2021 Debentures may be surrendered for registration of transfer, the 2021 Debentures may be surrendered for exchange, repurchase, redemption or conversion and where notices may be given to the Company in respect of the 2021 Debentures is at the office or agency of the Trustee in New York, New York or in Dallas, Texas; provided that payment of interest may be made at the option of the Company by check mailed to the address of the person entitled thereto as such address shall appear in the 3

6 Security Register (as defined in the Indenture) or by wire transfer of immediately available funds to the accounts specified by the Holder of such 2021 Debentures. SECTION 107 Redemption. (a) There shall be no sinking fund for the retirement of the 2021 Debentures. (b) The Company, at its option, may redeem the 2021 Debentures in accordance with the provisions of and at the Redemption Prices set forth under the captions "Optional Redemption" and "Notice of Redemption" in the 2021 Debentures and in accordance with the provisions of the Indenture, including, without limitation, Article Eleven. (c) The Company, at the option of the Holders thereof, shall redeem the 2021 Debentures in accordance with the provisions of and at the Change in Control Purchase Prices set forth under the caption "Purchase of Securities at Option of Holder Upon a Change in Control" in the 2021 Debentures and in accordance with the provisions of the Indenture, including, without limitation, Article Eleven. SECTION 108 Conversion. The 2021 Debentures shall be convertible in accordance with the provisions and at the Conversion Rate set forth under the caption "Conversion" in the 2021 Debentures and in accordance with the provisions of the Indenture, including, without limitation, Article Fourteen. SECTION 109 Maturity. The date on which the principal of the 2021 Debentures is payable, unless accelerated pursuant to the Indenture, shall be May 15, 2021. SECTION 110 Repurchase. The 2021 Debentures shall be repurchased by the Company in accordance with the provisions and at the Repurchase Prices set forth under the caption "Repurchase by the Company at the Option of the Holder" in the 2021 Debentures and in accordance with the provisions of the Indenture, including, without limitation, Article Fifteen. SECTION 111 Discharge of Liability on 2021 Debentures. Section 403 of the Indenture shall be applicable to the 2021 Debentures. SECTION 112 Other Terms of 2021 Debentures. Without limiting the foregoing provisions of this Article One, the terms of the 2021 Debentures shall be as set forth in the form of 2021 Debentures set forth in Annex A hereto and as provided in the Indenture. 4

7 ARTICLE TWO AMENDMENTS TO THE INDENTURE The amendments contained herein shall apply to 2021 Debentures only and not to any other series of Security issued under the Indenture and any covenants provided herein are expressly being included solely for the benefit of the 2021 Debentures. These amendments shall be effective for so long as there remains any 2021 Debentures Outstanding. SECTION 201 Definitions. Section 101 of the Indenture is amended by inserting or restating, as the case may be, in their appropriate alphabetical position, the following definitions: "Capital Stock" or "capital stock" of any Person means any and all shares, interests, partnership interests, participations, rights or other equivalents (however designated) of such Person's equity interest (however designated) issued by that Person. "Change in Control" has the meaning specified in Section 1110. "Change in Control Purchase Date" has the meaning specified in Section 1110. "Change in Control Purchase Notice" has the meaning specified in Section 1110. "Change in Control Purchase Price" has the meaning specified in Section 1110. "Company Notice Date" has the meaning specified in Section 1503. "Conversion Agent" shall be the agent specified in Section 101. "Conversion Date" has the meaning specified in Section 1402. "Conversion Rate" has the meaning specified in Section 1401. "Exchange Act" means the Securities Exchange Act of 1934, as amended, or any successor statute. "Global Securities" has the meaning specified in Section 101. "Issue Date" of any 2021 Debenture means the date on which the 2021 Debenture was originally issued or deemed issued as set forth on the face of the 2021 Debenture. "Issue Price" of any 2021 Debenture means, in connection with the original issuance of such 2021 Debenture, the initial issue price at which the 2021 Debenture is sold as set forth on the face of the 2021 Debenture. "Market Price" has the meaning specified in Section 1504. "non-electing share" has the meaning specified in Section 1411. 5

8 "Ordinary Shares" means any stock of any class of the Company (including, without limitation, the Company's ordinary shares of a nominal or par value of $0.01 per share) which has no preference in respect of dividends or of amounts payable in the event of any voluntary or involuntary liquidation, dissolution or winding up of the Company and which is not subject to redemption by the Company. "Outstanding", when used with respect to Securities, means, as of the date of determination, all Securities theretofore authenticated and delivered under this Indenture, except: (i) Securities theretofore cancelled by the Trustee or delivered to the Trustee for cancellation; (ii) Securities for whose payment, repurchase or redemption money or Ordinary Shares in the necessary amount has been theretofore deposited with the Trustee or any Paying Agent (other than the Company) in trust or set aside and segregated in trust by the Company (if the Company shall act as its own Paying Agent) for the Holders of such Securities; provided that, if such Securities are to be redeemed, notice of such redemption has been duly given pursuant to this Indenture or provision therefor satisfactory to the Trustee has been made; (iii) Securities which have been cancelled pursuant to Section 309 or in exchange for or in lieu of which other Securities have been authenticated and delivered pursuant to this Indenture, other than any such Securities in respect of which there shall have been presented to the Trustee proof satisfactory to it that such Securities are held by a bona fide purchaser in whose hands such Securities are valid obligations of the Company; and (iv) 2021 Debentures converted for Ordinary Shares pursuant to Article Fourteen; provided, however, that in determining whether the Holders of the requisite principal amount of the Outstanding Securities have given any request, demand, authorization, direction, notice, consent or waiver hereunder, Securities owned by the Company or any other obligor upon the Securities or any Affiliate of the Company or of such other obligor shall be disregarded and deemed not to be Outstanding, except that, in determining whether the Trustee shall be protected in relying upon any such request, demand, authorization, direction, notice, consent or waiver, only Securities which the Trustee knows to be so owned shall be so disregarded. Securities so owned which have been pledged in good faith may be regarded as Outstanding if the pledgee establishes to the satisfaction of the Trustee the pledgee's right so to act with respect to such Securities and that the pledgee is not the Company or any other obligor upon the Securities or any Affiliate of the Company or of such other obligor. "Principal Amount" of a 2021 Debenture means the Principal Amount as set forth on the face of the 2021 Debenture. "Repurchase Date" has the meaning specified in Section 1501. "Repurchase Notice" has the meaning specified in Section 1501. "Repurchase Price" has the meaning specified in Section 1501. 6

9 "Sale Price" has the meaning specified in Section 1504. "Securities" has the meaning stated in the first recital of this Indenture and more particularly means any Securities authenticated and delivered under this Indenture, including 2021 Debentures. "Securities Act" means the Securities Act of 1933, as amended, or any successor statute. "Tax Additional Amounts" has the meaning specified in the form of 2021 Debentures attached hereto as Annex A. "Trading Day" means a day during which trading in securities generally occurs on the New York Stock Exchange or, if the Ordinary Shares are not listed on the New York Stock Exchange, on the principal other national or regional securities exchange on which the Ordinary Shares are then listed or, if the Ordinary Shares are not listed on a national or regional securities exchange, on the National Association of Securities Dealers Automated Quotation System or, if the Ordinary Shares are not quoted on the National Association of Securities Dealers Automated Quotation System, on the principal other market on which the Ordinary Shares are then traded. "2021 Debentures" means the 1.5% Convertible Debentures due May 15, 2021 of the Company authorized by or pursuant to resolution of the Board of Directors. "Voting Stock" means any class or classes of Capital Stock pursuant to which the holders thereof under ordinary circumstances have the power to vote in the election of the board of directors, managers or trustees of any Person (or other Persons performing similar functions), irrespective of whether or not, at the time, Capital Stock of any other class or classes shall have, or might have, voting power by reason of the happening of any contingency. SECTION 202 Registration, Registration of Transfer and Exchange. The Indenture shall be amended by replacing the eighth paragraph of Section 305 with the following paragraph: The Company shall not be required (i) to issue, register the transfer of or exchange the Securities of any series during a period beginning at the opening of business 15 days before the day of the mailing of a notice of redemption of Securities of that series selected for redemption and ending at the close of business on the day of such mailing, (ii) to register the transfer of or exchange any 2021 Debenture so selected for redemption in whole or in part, except the unredeemed portion of any Security being redeemed in part, or (iii) to exchange or register a transfer of any 2021 Debenture or portions thereof in respect of which a Change in Control Purchase Notice or Repurchase Notice has been delivered and not withdrawn by the Holder thereof (except, in the case of the purchase of a 2021 Debenture in part, the portion not to be purchased). 7

10 SECTION 203 Mutilated, Destroyed, Lost and Stolen Securities. The Indenture shall be amended by replacing the fourth paragraph of Section 306 with the following paragraph: In case any such mutilated, destroyed, lost or stolen Security has or is about to become due and payable, or is about to be redeemed or purchased by the Company upon a Change in Control pursuant to Article Eleven or purchased by the Company on a Repurchase Date pursuant to Article Fifteen, the Company in its discretion may, instead of issuing a new Security, pay such Security. SECTION 204 Payment of Interest; Interest Rights Preserved. The Indenture shall be amended by inserting the following paragraph before the final paragraph in Section 307: In the case of any 2021 Debenture or portion thereof which is surrendered for conversion after the close of business on the Regular Record Date immediately preceding any Interest Payment Date and prior to the opening of business on such next succeeding Interest Payment Date (unless such 2021 Debenture or portion thereof which is being surrendered for conversion has been called for redemption on a Redemption Date within such period), interest whose Stated Maturity is on such Interest Payment Date shall be payable on such Interest Payment Date notwithstanding such conversion, and such interest (whether or not punctually paid or duly provided for) shall be paid to the Person in whose name that 2021 Debenture (or one or more Predecessor Securities) is registered at the close of business on such Regular Record Date; provided, however, that such payment of interest shall be subject to the payment to the Company by the Holder of such 2021 Debenture or portion thereof surrendered for conversion (such payment to accompany such surrender) of an amount equal to the amount of such interest, in accordance with but only to the extent required by Section 1402. Except as otherwise provided in the immediately preceding sentence, in the case of any 2021 Debenture which is converted, interest whose Stated Maturity is after the date of conversion of such 2021 Debenture shall not be payable. SECTION 205 Satisfaction and Discharge of Indenture. The Indenture shall be amended by replacing the last paragraph of Section 401 with the following paragraph: Notwithstanding the satisfaction and discharge of this Indenture with respect to the Outstanding Securities of such series pursuant to this Section 401, the obligations of the Company to the Trustee under Section 607, the obligations of the Trustee to any Authenticating Agent under Section 614 and, except for a discharge pursuant to subclause (A) of clause (1) of this Section 401, the obligations of the Company under Sections 305, 306, 404, 610(e), 701, 1001 and 1002 and Articles Eleven, Fourteen and Fifteen and the obligations of the Trustee under Section 402 and the last paragraph of Section 1003 shall survive. 8

11 SECTION 206 Discharge of Liability on Securities of Any Series. The Indenture shall be amended by replacing the last paragraph of Section 403 with the following paragraph: Upon the satisfaction of the conditions set forth in this Section with respect to all the Outstanding Securities of any series, the terms and conditions of such series, including the terms and conditions with respect thereto set forth in this Indenture, shall no longer be binding upon, or applicable to, the Company; provided that the Company shall not be discharged from (a) any payment obligations in respect of Securities of such series that are deemed not to be Outstanding under clause (iii) of the definition thereof if such obligations continue to be valid obligations of the Company under applicable law or (b) any obligations pursuant to Section 305 or 306 or Articles Eleven, Fourteen and Fifteen. SECTION 207 Unconditional Right of Holders to Receive Principal, Premium and Interest. Section 508 of the Indenture shall be amended by replacing that section with the following: Section 508. Unconditional Right of Holders to Receive Principal, Premium, Interest and Tax Additional Amounts. Notwithstanding any other provision in this Indenture, the Holder of any Security shall have the right, which is absolute and unconditional, to receive payment of the principal of (and premium, if any) and (subject to Section 307) interest on and Tax Additional Amounts, if any, with respect to such Security on the Stated Maturity or Maturities expressed in such Security (or in the case of redemption, to receive the Redemption Price on the Redemption Date, in the case of a repurchase, to receive the Repurchase Price on the Repurchase Date, or in the case of a Change in Control, to receive the Change in Control Purchase Price on the Change in Control Purchase Date) and to institute suit for the enforcement of any such payment on or after such respective dates, and such rights shall not be impaired without the consent of such Holder. SECTION 208 Consolidation, Merger and Sale. The Indenture shall be amended by inserting "and shall have provided for conversion rights in accordance with Section 1411" at the end of Section 801(1). SECTION 209 Supplemental Indentures Without Consent of Holders. Section 901 of the Indenture shall be amended by inserting the following paragraph: (9) to make provision with respect to the conversion rights, if any, to Holders of 2021 Debentures pursuant to the requirements of Article Fourteen hereof. 9

12 SECTION 210 Supplemental Indenture with Consent of Holder. The Indenture shall be amended by inserting ", or adversely affect the right to convert any 2021 Debenture as provided in Article Fourteen, or adversely affect the right to require the Company to repurchase the 2021 Debentures as provided in Article Fifteen." at the end of Section 902(1). SECTION 211 Maintenance of Office or Agency. The first paragraph of Section 1002 of the Indenture is amended by changing the first sentence thereof to read in its entirety as follows: If Securities of a series are issuable only as Registered Securities, the Company will maintain in each Place of Payment for any series of Securities an office or agency where Securities of that series may be presented or surrendered for payment, where Securities of that series may be surrendered for registration of transfer or exchange, where 2021 Debentures may be surrendered for conversion and where notices and demands to or upon the Company in respect of the Securities of that series and this Indenture may be served. The Company will give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office of the Trustee, and the Company hereby appoints the Trustee as its agent to receive all such presentations, surrenders, notices and demands. SECTION 212 Redemption. Article Eleven shall be amended by inserting the following sections in their entirety: Section 1109 Conversion Arrangement on Call for Redemption In connection with 2021 Debentures, the Company may arrange for the purchase and conversion of any 2021 Debentures called for redemption by an agreement with one or more investment bankers or other purchasers to purchase such 2021 Debentures by paying to a Paying Agent (other than the Company or any of its Affiliates) in trust for the Holders, on or before 11:00 A.M. New York City time on the Redemption Date, an amount that, together with any amounts deposited with such Paying Agent by the Company for the redemption of such 2021 Debentures, is not less than the Redemption Price of such 2021 Debentures. Notwithstanding anything to the contrary contained in this Article Eleven, the obligation of the Company to pay the Redemption Price of such 2021 Debentures, including interest, if any, shall be deemed to be satisfied and discharged to the extent such amount is so paid by such purchasers; provided, however, that nothing in this Section 1109 shall relieve the Company of its obligation to pay the Redemption Price on 2021 Debentures called for redemption. If such an agreement is entered into, any 2021 Debentures called for redemption and not 10

13 surrendered for conversion by the Holders thereof prior to the relevant Redemption Date may, at the option of the Company upon written notice to the Trustee, be deemed, to the fullest extent permitted by law, acquired by such purchasers from such Holders and (notwithstanding anything to the contrary contained in Article Fourteen) surrendered by such purchasers for conversion, all as of 11:00 A.M. New York City time on the Redemption Date, subject to payment of the above amount as aforesaid. The Paying Agent shall hold and pay to the Holders whose 2021 Debentures are selected for redemption any such amount paid to it for purchase in the same manner as it would money deposited with it by the Company for the redemption of 2021 Debentures. Without the Paying Agent's prior written consent, no arrangement between the Company and such purchasers for the purchase and conversion of any 2021 Debentures shall increase or otherwise affect any of the powers, duties, responsibilities or obligations of the Paying Agent as set forth in this Indenture, and the Company agrees to indemnify the Paying Agent from, and hold it harmless against, any loss, liability or expense arising out of or in connection with any such arrangement for the purchase and conversion of any 2021 Debentures between the Company and such purchasers, including the costs and expenses incurred by the Paying Agent in the defense of any claim or liability reasonably incurred without negligence or bad faith on their part arising out of or in connection with the exercise or performance of any of its powers, duties, responsibilities or obligations under this Indenture, in accordance with the indemnity provisions applicable to the Trustee set forth herein. Section 1110 Purchase of Securities at Option of the Holder Upon Change in Control (a) If at any time that 2021 Debentures remain Outstanding there shall occur a Change in Control, 2021 Debentures shall be purchased by the Company at the option of the Holders thereof as of a date that is within 35 Business Days after the occurrence of the Change in Control (the "Change in Control Purchase Date") at a purchase price equal to the Principal Amount plus accrued and unpaid interest up to but excluding the Change in Control Purchase Date (the "Change in Control Purchase Price"), subject to satisfaction by or on behalf of any Holder of the requirements set forth in subsection (c) of this Section 1110. A "Change in Control" shall be deemed to have occurred if any of the following occurs after the Issue Date: (1) any "person" or "group" (as such terms are defined below) is or becomes the "beneficial owner" (as defined below), directly or indirectly, of shares of Voting Stock of the Company representing 50% or more of the total voting power of all outstanding classes of Voting Stock of the Company or has the power, directly or indirectly, to elect a majority of the members of the Board of Directors of the Company (but specifically excluding any right of any Person or Persons to designate directors of the Company pursuant to Article 3 of the 11

14 Agreement and Plan of Merger dated July 12, 1999 among Schlumberger Limited, the Company and certain of their respective subsidiaries); or (2) the Company consolidates with, or merges with or into, another person or the Company sells, assigns, conveys, transfers, leases or otherwise disposes of all or substantially all of the assets of the Company, or any person consolidates with, or merges with or into, the Company, or the Company completes a scheme of arrangement under Cayman Islands law with another Person, in any such event other than pursuant to a transaction in which the persons that "beneficially owned" (as defined below), directly or indirectly, shares of Voting Stock of the Company immediately prior to such transaction "beneficially own" (as defined below), directly or indirectly, shares of Voting Stock of the Company representing at least a majority of the total voting power of all outstanding classes of Voting Stock of the surviving or transferee person; or (3) there shall occur the liquidation or dissolution of the Company. For the purpose of the definition of "Change in Control", (i) "person" and "group" have the meanings given such terms under Section 13(d) and 14(d) of the Exchange Act or any successor provision to either of the foregoing, and the term "group" includes any group acting for the purpose of acquiring, holding or disposing of securities within the meaning of Rule 13d-5(b)(1) under the Exchange Act (or any successor provision thereto), (ii) a "beneficial owner" shall be determined in accordance with Rule 13d-3 under the Exchange Act, as in effect on May 8, 2001, except that the number of shares of Voting Stock of the Company shall be deemed to include, in addition to all outstanding shares of Voting Stock of the Company and Unissued Shares deemed to be held by the "person" or "group" (as such terms are defined above) or other person with respect to which the Change in Control determination is being made, all Unissued Shares deemed to be held by all other persons, and (iii) the terms "beneficially owned" and "beneficially own" shall have meanings correlative to that of "beneficial owner". The term "Unissued Shares" means shares of Voting Stock not outstanding that are subject to options, warrants, rights to purchase or conversion privileges exercisable within 60 days of the date of determination of a Change in Control. (b) Within 15 Business Days after the occurrence of a Change in Control, the Company shall mail a written notice of the Change in Control to the Trustee and to each Holder. The notice shall include the form of a Change in Control Purchase Notice to be completed by the Holder and shall state: (1) the date of such Change in Control and, briefly, the events causing such Change in Control; (2) the date by which the Change in Control Purchase Notice pursuant to this Section 1110 must be given; 12

15 (3) the Change in Control Purchase Date; (4) the Change in Control Purchase Price; (5) briefly, the conversion rights of the 2021 Debentures; (6) the name and address of each Paying Agent and Conversion Agent; (7) the Conversion Rate and any adjustments thereto; (8) that 2021 Debentures as to which a Change in Control Purchase Notice has been given may be converted into Ordinary Shares pursuant to Article Fourteen only to the extent that the Change in Control Purchase Notice has been withdrawn in accordance with the terms of this Indenture; (9) the procedures that the Holder must follow to exercise rights under this Section 1110; (10) the procedures for withdrawing a Change in Control Purchase Notice, including a form of notice of withdrawal; and (11) that the Holder must satisfy the requirements set forth in the 2021 Debentures in order to convert the 2021 Debentures. If any of the 2021 Debentures is in the form of a Global Security, then the Company shall modify such notice to the extent necessary to accord with the procedures of the Depositary applicable to the repurchase of Global Securities. (c) A Holder may exercise its rights specified in subsection (a) of this Section 1110 upon delivery of a written notice (which shall be in substantially the form included as an attachment to the Security and which may be delivered by letter, overnight courier, hand delivery, facsimile transmission or in any other written form and, in the case of Global Securities, may be delivered electronically or by other means in accordance with the Depositary's customary procedures) of the exercise of such rights (a "Change in Control Purchase Notice") to any Paying Agent at any time prior to the close of business on the Business Day next preceding the Change in Control Purchase Date. The delivery of such 2021 Debenture to any Paying Agent (together with all necessary endorsements) at the office of such Paying Agent shall be a condition to the receipt by the Holder of the Change in Control Purchase Price therefor. The Company shall purchase from the Holder thereof, pursuant to this Section 1110, a portion of a 2021 Debenture if the Principal Amount of such portion is $1,000 or an integral multiple of $1,000. Provisions of this Indenture 13

16 that apply to the purchase of all of a 2021 Debenture pursuant to Sections 1110 through 1115 also apply to the purchase of such portion of such 2021 Debenture. Notwithstanding anything herein to the contrary, any Holder delivering to a Paying Agent the Change in Control Purchase Notice contemplated by this subsection (c) shall have the right to withdraw such Change in Control Purchase Notice in whole or in a portion thereof that is a Principal Amount of $1,000 or in an integral multiple thereof at any time prior to the close of business on the Business Day next preceding the Change in Control Purchase Date by delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 1111. A Paying Agent shall promptly notify the Company of the receipt by it of any Change in Control Purchase Notice or written withdrawal thereof. Anything herein to the contrary notwithstanding, in the case of Global Securities, any Change in Control Purchase Notice may be delivered or withdrawn and such 2021 Debentures may be surrendered or delivered for purchase in accordance with the applicable procedures of the Depositary as in effect from time to time. Section 1111 Effect of Change in Control Purchase Notice Upon receipt by any Paying Agent of the Change in Control Purchase Notice specified in Section 1110(c), the Holder of the 2021 Debenture in respect of which such Change in Control Purchase Notice was given shall (unless such Change in Control Purchase Notice is withdrawn as specified below) thereafter be entitled to receive the Change in Control Purchase Price with respect to such 2021 Debenture. Such Change in Control Purchase Price shall be paid to such Holder promptly following the later of (a) the Change in Control Purchase Date with respect to such 2021 Debenture (provided the conditions in Section 1110(c) have been satisfied) and (b) the time of delivery of such 2021 Debenture to a Paying Agent by the Holder thereof in the manner required by Section 1110(c). 2021 Debentures in respect of which a Change in Control Purchase Notice has been given by the Holder thereof may not be converted into Ordinary Shares on or after the date of the delivery of such Change in Control Purchase Notice unless such Change in Control Purchase Notice has first been validly withdrawn. A Change in Control Purchase Notice may be withdrawn by means of a written notice (which may be delivered by letter, overnight courier, hand delivery, facsimile transmission or in any other written form and, in the case of Global Securities, may be delivered electronically or by other means in accordance with the Depositary's customary procedures) of withdrawal delivered by the Holder to a Paying Agent at any time prior to the close of business on the Business Day immediately preceding the Change in Control Purchase Date, specifying the Principal Amount of the Security or portion thereof (which must be a Principal 14

17 Amount of $1,000 or an integral multiple of $1,000 in excess thereof) with respect to which such notice of withdrawal is being submitted. Section 1112 Deposit of Change in Control Purchase Price On or before 11:00 a.m. New York City time on the Change in Control Purchase Date, the Company shall deposit with the Trustee or with a Paying Agent (other than the Company or an Affiliate of the Company) an amount of money (in immediately available funds if deposited on such Business Day) sufficient to pay the aggregate Change in Control Purchase Price of all the 2021 Debentures or portions thereof that are to be purchased as of such Change in Control Purchase Date. The manner in which the deposit required by this Section 1112 is made by the Company shall be at the option of the Company, provided that such deposit shall be made in a manner such that the Trustee or a Paying Agent shall have immediately available funds on the Change in Control Purchase Date. If a Paying Agent holds, in accordance with the terms hereof, money sufficient to pay the Change in Control Purchase Price of any 2021 Debenture for which a Change in Control Purchase Notice has been tendered and not withdrawn in accordance with this Indenture then, on the Change in Control Purchase Date, such 2021 Debenture will cease to be Outstanding and the rights of the Holder in respect thereof shall terminate (other than the right to receive the Change in Control Purchase Price as aforesaid). The Company shall publicly announce the Principal Amount of 2021 Debentures purchased as a result of such Change in Control on or as soon as practicable after the Change in Control Purchase Date. Section 1113 Securities Purchased In Part Any 2021 Debenture that is to be purchased only in part shall be surrendered at the office of a Paying Agent and promptly after the Change in Control Purchase Date the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such 2021 Debenture, without service charge, a new 2021 Debenture or 2021 Debentures, of such authorized denomination or denominations as may be requested by such Holder, in aggregate Principal Amount equal to, and in exchange for, the portion of the Principal Amount of the 2021 Debenture so surrendered that is not purchased. Section 1114 Compliance With Securities Laws Upon Purchase of Securities In connection with any offer to purchase or purchase of 2021 Debentures under Section 1110, the Company shall (a) comply with Rule 13e-4 (or any successor to either such Rule), if applicable, under the Exchange Act, (b) file the related Schedule TO (or any successor or similar schedule, form or report) if required under the Exchange Act, and (c) otherwise comply with all federal and state securities laws in connection with such offer, all so as to permit the rights of 15

18 the Holders and obligations of the Company under Sections 1110 through 1115 to be exercised in the time and in the manner specified therein. Section 1115 Repayment to the Company To the extent that the aggregate amount of cash deposited by the Company pursuant to Section 1112 exceeds the aggregate Change in Control Purchase Price together with interest, if any, thereon of the 2021 Debentures or portions thereof that the Company is obligated to purchase, then promptly after the Change in Control Purchase Date the Trustee or a Paying Agent, as the case may be, shall return any such excess to the Company. SECTION 213 Conversion, Repurchase. The Indenture is amended by adding the following Articles Fourteen and Fifteen to the Indenture: ARTICLE FOURTEEN CONVERSION Section 1401 Conversion Privilege 2021 Debentures shall be convertible in accordance with their terms and in accordance with this Article. A Holder of a 2021 Debenture may convert the Principal Amount of such 2021 Debenture (or any portion thereof equal to a Principal Amount of $1,000 or any integral multiple of a Principal Amount of $1,000 in excess thereof) into Ordinary Shares at any time during the period set forth under the caption "Conversion" in the 2021 Debentures, at the Conversion Rate then in effect. In case a 2021 Debenture or portion thereof is called for redemption pursuant to Article Eleven, such conversion right shall terminate at the close of business on the fourth Trading Day prior to the earlier of (a) May 15, 2021 and (b) the date on which such 2021 Debenture (or portion thereof) is redeemed (unless the Company shall default in making the redemption payment when due, in which case the conversion right shall terminate at the close of business on the date such default is cured and such 2021 Debenture is redeemed). The number of Ordinary Shares issuable upon conversion of a 2021 Debenture per $1,000 of Principal Amount thereof (the "Conversion Rate") shall be that set forth under the caption "Conversion" in the 2021 Debentures, subject to adjustment as herein set forth. Provisions of this Indenture that apply to conversion of all of a 2021 Debenture also apply to conversion of a portion of a 2021 Debenture. A 2021 Debenture in respect of which a Holder has delivered a Repurchase Notice or Change in Control Purchase Notice exercising the option of such Holder to require the Company to purchase such 2021 Debenture, may be converted only if such notice of exercise is withdrawn in accordance with the 16

19 terms of this Indenture. A Holder of 2021 Debentures is not entitled to any rights of a holder of Ordinary Shares until such Holder has converted its 2021 Debentures to Ordinary Shares, and only to the extent such 2021 Debentures are deemed to have been converted into Ordinary Shares pursuant to this Article Fourteen. Section 1402 Conversion Procedure To convert a 2021 Debenture, a Holder must satisfy the requirements set forth under the caption "Conversion" in the 2021 Debenture. The date on which the Holder satisfies all of those requirements is the "Conversion Date." As soon as practicable after the Conversion Date, the Company shall deliver to the Holder through a Conversion Agent a certificate for the number of whole Ordinary Shares issuable upon the conversion and cash in lieu of any fractional shares pursuant to Section 1403. Anything herein to the contrary notwithstanding, in the case of Global Securities, conversion notices may be delivered and such 2021 Debentures may be surrendered for conversion in accordance with the applicable procedures of the Depositary as in effect from time to time. The Person in whose name the Ordinary Shares certificate is registered shall be deemed to be a shareholder of record on the Conversion Date; provided, however, that no surrender of a 2021 Debenture on any date when the stock transfer books of the Company shall be closed shall be effective to constitute the Person or Persons entitled to receive the Ordinary Shares upon such conversion as the record holder or holders of such Ordinary Shares on such date, but such surrender shall be effective to constitute the Person or Persons entitled to receive such Ordinary Shares as the record holder or holders thereof for all purposes at the close of business on the next succeeding day on which such stock transfer books are open; provided, further, that such conversion shall be at the Conversion Rate in effect on the date that such 2021 Debenture shall have been surrendered for conversion, as if the stock transfer books of the Company had not been closed. Upon conversion of a 2021 Debenture, such Person shall no longer be a Holder of such 2021 Debenture. No payment or adjustment will be made for dividends on, or other distributions with respect to, any Ordinary Shares except as provided in this Article Fourteen. On conversion of a 2021 Debenture, the fair market value of such Ordinary Shares (together with any such cash payment in lieu of fractional shares) shall be treated as issued in exchange for the 2021 Debenture being converted pursuant to the provisions hereof. If a Holder converts more than one 2021 Debenture at the same time, the number of Ordinary Shares issuable upon the conversion shall be based on the aggregate Principal Amount of 2021 Debentures converted. Upon surrender of a 2021 Debenture that is converted in part, the Company shall execute, and the Trustee shall authenticate and deliver to the 17

20 Holder, a new 2021 Debenture equal in Principal Amount to the Principal Amount of the unconverted portion of the 2021 Debenture surrendered. 2021 Debentures or portions thereof surrendered for conversion after the close of business on any Regular Record Date immediately preceding any Interest Payment Date and prior to the opening of business on such Interest Payment Date shall (unless such 2021 Debentures or portions thereof have been called for redemption on a Redemption Date within such period) be accompanied by payment to the Company or its order, in New York Clearing House funds or other funds acceptable to the Company, of an amount equal to the interest payable on such Interest Payment Date on the principal amount of 2021 Debentures or portions thereof being surrendered for conversion, and such interest payable on such Interest Payment Date shall be payable to the registered Holder notwithstanding the conversion of such 2001 Debenture. Section 1403 Fractional Shares The Company will not issue fractional Ordinary Shares upon conversion of 2021 Debentures. In lieu thereof, the Company will pay an amount in cash based upon the closing price of the Ordinary Shares on the Trading Day immediately prior to the Conversion Date. Section 1404 Taxes on Conversion If a Holder converts a 2021 Debenture, the Company shall pay any documentary, stamp or similar issue or transfer tax due on the issue of Ordinary Shares upon such conversion. However, the Holder shall pay any such tax which is due because the Holder requests the shares to be issued in a name other than the Holder's name. The Conversion Agent may refuse to deliver the certificate representing the Ordinary Shares being issued in a name other than the Holder's name until the Conversion Agent receives a sum sufficient to pay any tax which will be due because the shares are to be issued in a name other than the Holder's name. Nothing herein shall preclude any tax withholding required by law or regulation. Section 1405 Company to Provide Ordinary Shares The Company shall, prior to issuance of any 2021 Debentures under this Article Fourteen, and from time to time as may be necessary, reserve, out of its authorized but unissued Ordinary Shares, a sufficient number of Ordinary Shares to permit the conversion of all 2021 Debentures Outstanding into Ordinary Shares. All Ordinary Shares delivered upon conversion of the 2021 Debentures shall be newly issued shares, shall be duly authorized, validly issued, fully paid and nonassessable and shall be free from preemptive rights and free of any lien or adverse claim. The Company will endeavor promptly to comply with all federal and state securities laws regulating the registration of the offer and delivery of Ordinary 18

21 Shares to a converting Holder upon conversion of 2021 Debentures, if any, and will list or cause to have quoted such Ordinary Shares on each national securities exchange or on the Nasdaq National Market or other over-the-counter market or such other market on which the Ordinary Shares are then listed or quoted. Section 1406 Adjustment of Conversion Rate The Conversion Rate shall be adjusted from time to time by the Company as follows: (a) In case the Company shall (i) pay a dividend on its Ordinary Shares in Ordinary Shares, (ii) make a distribution on its Ordinary Shares in Ordinary Shares, (iii) subdivide its outstanding Ordinary Shares into a greater number of shares, or (iv) combine its outstanding Ordinary Shares into a smaller number of shares, the Conversion Rate in effect immediately prior thereto shall be adjusted so that the Holder of any 2021 Debenture thereafter surrendered for conversion shall be entitled to receive that number of Ordinary Shares which it would have owned had such 2021 Debenture been converted immediately prior to the happening of such event. An adjustment made pursuant to this subsection (a) shall become effective immediately after the record date in the case of a dividend or distribution and shall become effective immediately after the effective date in the case of subdivision or combination. (b) In case the Company shall issue rights or warrants to all or substantially all holders of its Ordinary Shares entitling them (for a period commencing no earlier than the record date described below and expiring not more than 60 days after such record date) to subscribe for or purchase Ordinary Shares at a price per share less than the current market price per Ordinary Share (as determined in accordance with subsection (e) of this Section 1406) on the record date for the determination of shareholders entitled to receive such rights or warrants, the Conversion Rate in effect immediately prior thereto shall be adjusted so that the same shall equal the rate determined by multiplying the Conversion Rate in effect immediately prior to such record date by a fraction of which the numerator shall be the number of Ordinary Shares outstanding on such record date plus the number of additional Ordinary Shares offered, and of which the denominator shall be the number of Ordinary Shares outstanding on such record date plus the number of shares which the aggregate offering price of the total number of Ordinary Shares so offered would purchase at the current market price per share (as determined in accordance with subsection (e) of this Section 1406) of Ordinary Shares on such record date. Such adjustment shall be made successively whenever any such rights or warrants are issued, and shall become effective immediately after such record date. If at the end of the period during which such rights or warrants are exercisable not all rights or warrants shall have been exercised, the adjusted Conversion Rate shall be immediately readjusted to what it would have been based upon the number of additional Ordinary Shares actually issued. 19

22 (c) In case the Company shall distribute to all or substantially all holders of its Ordinary Shares any shares of capital stock (other than dividends or distributions of Ordinary Shares on Ordinary Shares to which Section 1406(a) applies) of the Company, evidences of indebtedness or other securities or assets (including securities of any Person other than the Company, but excluding all-cash distributions or any rights or warrants referred to in Section 1406(b)), then in each such case the Conversion Rate shall be adjusted so that the same shall equal the rate determined by multiplying the current Conversion Rate by a fraction of which the numerator shall be the current market price per share (as determined in accordance with subsection (e) of this Section 1406) of the Ordinary Shares on the record date mentioned below, and of which the denominator shall be the current market price per share (as determined in accordance with subsection (e) of this Section 1406) of the Ordinary Shares on such record date less the fair market value on such record date (as determined by the Board of Directors, whose determination shall be conclusive evidence of such fair market value and which shall be evidenced by an Officers' Certificate delivered to the Trustee) of the portion of the capital stock, evidences of indebtedness, securities or other non-cash assets so distributed applicable to one Ordinary Share (determined on the basis of the number of Ordinary Shares outstanding on the record date). Such adjustment shall be made successively whenever any such distribution is made and shall become effective immediately after the record date for the determination of shareholders entitled to receive such distribution. In the event that the Company implements a shareholder rights plan, such rights plan shall provide, subject to customary exceptions and limitations, that upon conversion of the 2021 Debentures the Holders will receive, in addition to the Ordinary Shares issuable upon such conversion, the rights issued under such rights plan (notwithstanding the occurrence of an event causing such rights to separate from the Ordinary Shares at or prior to the time of conversion). Any distribution of rights or warrants pursuant to a shareholder rights plan complying with the requirements set forth in the immediately preceding sentence of this paragraph shall not constitute a distribution of securities for the purposes of this Section 1406(c). Rights or warrants distributed by the Company to all holders of Ordinary Shares entitling the holders thereof to subscribe for or purchase shares of the Company's capital stock (either initially or under certain circumstances), which rights or warrants, until the occurrence of a specified event or events ("Trigger Event"): (i) are deemed to be transferred with such Ordinary Shares; (ii) are not exercisable; and (iii) are also issued in respect of future issuances of Ordinary Shares, shall be deemed not to have been distributed for purposes of this Section 1406(c) (and no adjustment to the Conversion Rate under this Section 1406(c) will be required) until the occurrence of the earliest Trigger Event. If such right or warrant is subject to subsequent events, upon the occurrence of which such right or warrant shall become exercisable to purchase different securities, evidences of indebtedness or other assets or entitle the holder to purchase a different number or amount of the foregoing or to purchase any of the foregoing at a different 20

23 purchase price, then the occurrence of each such event shall be deemed to be the date of issuance and record date with respect to a new right or warrant (and a termination or expiration of the existing right or warrant without exercise by the holder thereof). In addition, in the event of any distribution (or deemed distribution) of rights or warrants, or any Trigger Event or other event (of the type described in the preceding sentence) with respect thereto, that resulted in an adjustment to the Conversion Rate under this Section 1406(c), (1) in the case of any such rights or warrants which shall all have been redeemed or repurchased without exercise by any holders thereof, the Conversion Rate shall be readjusted upon such final redemption or repurchase to give effect to such distribution or Trigger Event, as the case may be, as though it were a cash distribution, equal to the per share redemption or repurchase price received by a holder of Ordinary Shares with respect to such rights or warrants (assuming such holder had retained such rights or warrants), made to all holders of Ordinary Shares as of the date of such redemption or repurchase, and (2) in the case of such rights or warrants all of which shall have expired or been terminated without exercise, the Conversion Rate shall be readjusted as if such rights and warrants had never been issued. (d) (1) In case the Company shall, by dividend or otherwise, at any time distribute (a "Triggering Distribution") to all or substantially all holders of its Ordinary Shares all-cash distributions in an aggregate amount that, together with the aggregate amount of (A) any cash and the fair market value (as determined by the Board of Directors, whose determination shall be conclusive evidence thereof and which shall be evidenced by an Officers' Certificate delivered to the Trustee) of any other consideration, payable in respect of any tender offer by the Company or a Subsidiary of the Company for Ordinary Shares consummated within the 12 months preceding the date of payment of the Triggering Distribution and in respect of which no Conversion Rate adjustment pursuant to this Section 1406 has been made and (B) all other cash distributions to all or substantially all holders of its Ordinary Shares made within the 12 months preceding the date of payment of the Triggering Distribution and in respect of which no Conversion Rate adjustment pursuant to this Section 1406 has been made, exceeds an amount equal to 12.5% of the product of the current market price per Ordinary Share (as determined in accordance with subsection (e) of this Section 1406) on the Business Day (the "Determination Date") immediately preceding the day on which such Triggering Distribution is declared by the Company multiplied by the number of Ordinary Shares outstanding on the Determination Date (excluding shares held in the treasury of the Company), the Conversion Rate shall be increased so that the same shall equal the rate determined by multiplying such Conversion Rate in effect immediately prior to the Determination Date by a fraction of which the numerator shall be such current market price per Ordinary Share (as determined in accordance with subsection (e) of this Section 1406) on the Determination Date, and the denominator shall be the current market price per Ordinary Share (as determined in accordance with subsection (e) of this Section 1406) on the Determination Date less the sum of the aggregate amount of cash and the aggregate fair market value (determined as aforesaid) of any such other consideration, so distributed, paid or payable (in the case of amounts paid in any 21

24 tender offer, including only that portion of the aggregate amount paid in the tender offer that was in excess of the aggregate value of the shares purchased in the tender offer (based on the current market price per Ordinary Share as determined in accordance with subsection (e) of this Section 1406 on the day the tender offer expired)) within such 12 months (including, without limitation, the Triggering Distribution) applicable to one Ordinary Share (determined on the basis of the number of Ordinary Shares outstanding on the Determination Date), such increase to become effective immediately prior to the opening of business on the day following the date on which the Triggering Distribution is paid. (2) In case any tender offer made by the Company or any of its Subsidiaries for Ordinary Shares shall expire and such tender offer (as amended upon the expiration thereof) shall involve the payment of aggregate consideration in an amount (determined as the sum of the aggregate amount of cash consideration and the aggregate fair market value (as determined by the Board of Directors, whose determination shall be conclusive evidence thereof and which shall be evidenced by an Officers' Certificate delivered to the Trustee thereof ) of any other consideration) that, together with the aggregate amount of (A) any cash and the fair market value (as determined by the Board of Directors, whose determination shall be conclusive evidence thereof and which shall be evidenced by an Officers' Certificate delivered to the Trustee) of any other consideration payable in respect of any other tender offers by the Company or any Subsidiary of the Company for Ordinary Shares consummated within the 12 months preceding the date of the Expiration Date (as defined below) and in respect of which no Conversion Rate adjustment pursuant to this Section 1406 has been made and (B) all cash distributions to all or substantially all holders of its Ordinary Shares made within the 12 months preceding the Expiration Date and in respect of which no Conversion Rate adjustment pursuant to this Section 1406 has been made, exceeds an amount equal to 12.5% of the product of the current market price per Ordinary Share (as determined in accordance with subsection (e) of this Section 1406) as of the last date (the "Expiration Date") tenders could have been made pursuant to such tender offer (as it may be amended) (the last time at which such tenders could have been made on the Expiration Date is hereinafter sometimes called the "Expiration Time") multiplied by the number of Ordinary Shares outstanding (including tendered shares but excluding any shares held in the treasury of the Company) at the Expiration Time, then, immediately prior to the opening of business on the day after the Expiration Date, the Conversion Rate shall be increased so that the same shall equal the rate determined by multiplying the Conversion Rate in effect immediately prior to close of business on the Expiration Date by a fraction of which the numerator shall be the sum of (x) the aggregate consideration (determined as aforesaid) payable to stockholders based on the acceptance (up to any maximum specified in the terms of the tender offer) of all shares validly tendered and not withdrawn as of the Expiration Time (the shares deemed so accepted, up to any such maximum, being referred to as the "Purchased Shares") and (y) the product of the number of Ordinary Shares outstanding (excluding any Purchased Shares and any shares held in the treasury of the Company) at the Expiration Time and the current market price per Ordinary Share (as determined in accordance with subsection (e) of this Section 1406) on the Trading Day next succeeding the Expiration Date, and the denominator shall be the product of the number of Ordinary Shares outstanding (including tendered shares but excluding any shares held in the treasury of the Company) at the Expiration Time multiplied by the current market price per Ordinary 22

25 Share (as determined in accordance with subsection (e) of this Section 1406) on the Trading Day next succeeding the Expiration Date, such increase to become effective immediately prior to the opening of business on the day following the Expiration Date. In the event that the Company is obligated to purchase shares pursuant to any such tender offer, but the Company is permanently prevented by applicable law from effecting any or all such purchases or any or all such purchases are rescinded, the Conversion Rate shall again be adjusted to be the Conversion Rate which would have been in effect based upon the number of shares actually purchased. If the application of this Section 1406(d)(2) to any tender offer would result in a decrease in the Conversion Rate, no adjustment shall be made for such tender offer under this Section 1406(d)(2). (3) For purposes of this Section 1406(d), the term "tender offer" shall mean and include both tender offers and exchange offers, all references to "purchases" of shares in tender offers (and all similar references) shall mean and include both the purchase of shares in tender offers and the acquisition of shares pursuant to exchange offers, and all references to "tendered shares" (and all similar references) shall mean and include shares tendered in both tender offers and exchange offers. (e) For the purpose of any computation under subsections (b), (c) and (d)(l) of this Section 1406, the current market price per Ordinary Share on any date shall be deemed to be the average of the daily closing prices for a period selected by the Company of either 5 consecutive Trading Days or 30 consecutive Trading Days commencing not more than 45 Trading Days before, and ending not later than, (i) the Determination Date with respect to distributions under subsection (d)(l) of this Section 1406 or (ii) the record date with respect to distributions, issuances or other events requiring such computation under subsection (b) or (c) of this Section 1406. For the purpose of any computation under subsection (d)(2) of this Section 1406, the current market price per Ordinary Share on any date shall be deemed to be the average of the daily closing prices for the 5 consecutive Trading Days commencing on that date. The closing price for each day shall be the last reported sales price or, in case no such reported sale takes place on such date, the average of the reported closing bid and asked prices in either case on the New York Stock Exchange (the "NYSE") or, if the Ordinary Shares are not listed or admitted to trading on the NYSE, on the principal national securities exchange on which the Ordinary Shares are listed or admitted to trading or, if not listed or admitted to trading on any national securities exchange, the last reported sales price of the Ordinary Shares as quoted on NASDAQ (the term "NASDAQ" shall include, without limitation, the Nasdaq National Market) or, in case no reported sales takes place, the average of the closing bid and asked prices as quoted on NASDAQ or any comparable system 23

26 or, if the Ordinary Shares are not quoted on NASDAQ or any comparable system, the closing sales price or, in case no reported sale takes place, the average of the closing bid and asked prices, as furnished by any two members of the National Association of Securities Dealers, Inc. selected from time to time by the Company for that purpose. If no such prices are available, the current market price per share shall be the fair value of an Ordinary Share as determined by the Board of Directors (which shall be evidenced by an Officers' Certificate delivered to the Trustee). (f) In any case in which this Section 1406 shall require that an adjustment be made following a record date or a Determination Date or Expiration Date, as the case may be, established for purposes of this Section 1406, the Company may elect to defer (but only until five Business Days following the filing by the Company with the Trustee of the certificate described in Section 1409) issuing to the Holder of any 2021 Debenture converted after such record date or Determination Date or Expiration Date the Ordinary Shares and other capital stock of the Company issuable upon such conversion over and above the Ordinary Shares and other capital stock of the Company issuable upon such conversion only on the basis of the Conversion Rate prior to adjustment; and, in lieu of the shares the issuance of which is so deferred, the Company shall issue or cause its transfer agents to issue due bills or other appropriate evidence prepared by the Company of the right to receive such shares. If any distribution in respect of which an adjustment to the Conversion Rate is required to be made as of the record date or Determination Date or Expiration Date therefor is not thereafter made or paid by the Company for any reason, the Conversion Rate shall be readjusted to the Conversion Rate which would then be in effect if such record date had not been fixed or such effective date or Determination Date or Expiration Date had not occurred. Section 1407 No Adjustment No adjustment in the Conversion Rate shall be required unless the adjustment would require an increase or decrease of at least 1% in the Conversion Rate as last adjusted; provided, however, that any adjustments which by reason of this Section 1407 are not required to be made shall be carried forward and taken into account in any subsequent adjustment. All calculations under this Article Fourteen shall be made to the nearest cent or to the nearest 1/1000th of a share, as the case may be. No adjustment need be made for issuances of Ordinary Shares pursuant to a Company plan for reinvestment of dividends or interest or for a change in the par value or a change to no par value of the Ordinary Shares. To the extent that the 2021 Debentures become convertible into the right to receive cash, no adjustment need be made thereafter as to the cash. Interest will not accrue on the cash. 24

27 Section 1408 Adjustment for Tax Purposes The Company shall be entitled to make such increases in the Conversion Rate, in addition to those required by Section 1406, as it in its discretion shall determine to be advisable in order that any stock dividends, subdivisions of shares, distributions of rights to purchase stock or securities or distributions of securities convertible into or exchangeable for stock hereafter made by the Company to its shareholders shall not be taxable. Section 1409 Notice of Adjustment Whenever the Conversion Rate is adjusted, the Company shall promptly mail to Holders a notice of the adjustment and file with the Trustee an Officers' Certificate specifying the adjusted Conversion Rate, and briefly stating the facts requiring the adjustment and the manner of computing it. Section 1410 Notice of Certain Transactions In the event that: (1) the Company takes any action which would require an adjustment in the Conversion Rate, (2) the Company takes any action that requires a supplemental indenture pursuant to Section 1411, or (3) there is a dissolution or liquidation of the Company, the Company shall mail to Holders and file with the Trustee a notice stating the proposed record or effective date, as the case may be. The Company shall mail the notice at least fifteen days before such date. Failure to mail such notice or any defect therein shall not affect the validity of any transaction referred to in clause (1), (2) or (3) of this Section 1410. Section 1411 Effect of Reclassification, Consolidation, Merger or Sale on Conversion Privilege If any of the following shall occur, namely: (a) any reclassification or change of Ordinary Shares issuable upon conversion of the 2021 Debentures (other than a change in par value, or from par value to no par value, or from no par value to par value, or as a result of a subdivision or combination); (b) any consolidation, merger or scheme of arrangement in which the Company is a party consolidating with another entity or merging with or into another entity other than a merger in which the Company is the continuing corporation and which does not result in any reclassification of, or change (other than a change in par value, or from par value to no par value, or from no par value to par value, or as a result of a subdivision or combination triggering an adjustment under Section 1406(a)) in, Outstanding Ordinary Shares; or (c) any sale or conveyance of all or substantially 25

28 all of the property and assets of the Company to any Person, then the Company, or such successor, purchasing or transferee corporation, as the case may be, shall (if consideration is receivable by Holders of the Ordinary Shares in such consolidation, merger, scheme of arrangement, sale or conveyance), as a condition precedent to such reclassification, change, consolidation, merger, scheme of arrangement, sale or conveyance, execute and deliver to the Trustee a supplemental indenture providing that the Holder of each 2021 Debenture then Outstanding shall have the right to convert such 2021 Debenture into the kind and amount of shares of stock and other securities and property (including cash) receivable upon such reclassification, change, consolidation, merger, scheme of arrangement, sale or conveyance by a holder of the number of Ordinary Shares deliverable upon conversion of such 2021 Debenture immediately prior to such reclassification, change, consolidation, merger, scheme of arrangement, sale or conveyance assuming such Holder of Ordinary Shares of the Company (i) is not a person party to such transaction and (ii) failed to exercise his rights of an election, if any, as to the kind or amount of stock and other securities and property (including cash) receivable upon such reclassification, change, consolidation, merger, scheme of arrangement, sale or conveyance (provided, however, that if the kind or amount of stock and other securities and property (including cash) receivable upon such reclassification, change, consolidation, merger, scheme of arrangement, sale or conveyance is not the same for each Ordinary Share of the Company held immediately prior to such reclassification, change, consolidation, merger, scheme of arrangement, sale or conveyance in respect of which such rights of election shall not have been exercised ("non-electing share"), then for the purpose of this Section 1411 the kind and amount of stock and other securities and property (including cash) receivable upon such reclassification, change, consolidation, merger, scheme of arrangement, sale or conveyance by each non-electing share shall be deemed to be the kind and amount so receivable per share by a plurality of the non-electing shares). Such supplemental indenture shall provide for adjustments of the Conversion Rate which shall be as nearly equivalent as may be practicable to the adjustments of the Conversion Rate provided for in this Article Fourteen. If, in the case of any such consolidation, merger, scheme of arrangement, sale or conveyance, the stock or other securities and property (including cash) receivable thereupon by a holder of Ordinary Shares include shares of stock or other securities and property of a Person other than the successor, purchasing or transferee corporation, as the case may be, in such consolidation, merger, scheme of arrangement, sale or conveyance, then such supplemental indenture shall also be executed by such other Person and shall contain such additional provisions to protect the interests of the Holders of the 2021 Debentures as the Board of Directors shall reasonably consider necessary by reason of the foregoing. The provisions of this Section 1411 shall similarly apply to successive reclassifications, changes, consolidations, mergers, schemes of arrangements, sales or conveyances. In the event the Company shall execute a supplemental indenture pursuant to this Section 1411, the Company shall promptly file with the Trustee (x) an Officers' Certificate briefly stating the reasons therefor, the kind or amount of 26

29 shares of stock or other securities or property (including cash) receivable by Holders of the 2021 Debentures upon the conversion of their 2021 Debentures after any such reclassification, change, consolidation, merger, scheme of arrangement, sale or conveyance, any adjustment to be made with respect thereto and that all conditions precedent have been complied with and (y) an Opinion of Counsel that all conditions precedent have been complied with, and shall promptly mail notice thereof to all Holders. Section 1412 Trustee's Disclaimer The Trustee shall have no duty to determine when an adjustment under this Article Fourteen should be made, how it should be made or what such adjustment should be, but may accept as conclusive evidence of that fact or the correctness of any such adjustment, and shall be protected in relying upon, an Officers' Certificate including the Officers' Certificate with respect thereto which the Company is obligated to file with the Trustee pursuant to Section 1409. The Trustee makes no representation as to the validity or value of any securities or assets issued upon conversion of 2021 Debentures, and the Trustee shall not be responsible for the Company's failure to comply with any provisions of this Article Fourteen. The Trustee shall not be under any responsibility to determine the correctness of any provisions contained in any supplemental indenture executed pursuant to Section 1411, but may accept as conclusive evidence of the correctness thereof, and shall be fully protected in relying upon, the Officers' Certificate with respect thereto which the Company is obligated to file with the Trustee pursuant to Section 1411. Section 1413 Voluntary Increase The Company from time to time may increase the Conversion Rate by any amount for any period of time if the period is at least 20 days or such longer period as may be required by law and if the increase is irrevocable during the period. ARTICLE FIFTEEN REPURCHASE OF SECURITIES AT OPTION OF THE HOLDER Section 1501 General The Company may be required to repurchase 2021 Debentures in accordance with their terms and in accordance with this Article. 2021 Debentures shall be purchased by the Company under the paragraph "Repurchase by the Company at the Option of the Holder" of the 2021 Debentures on May 15, 2006, May 15, 2011 and May 15, 2016 (each, a 27

30 "Repurchase Date"), at the repurchase price specified therein (the "Repurchase Price"), at the option of the Holder thereof, upon: (1) delivery to the Paying Agent, by the Holder of a written notice of purchase (a "Repurchase Notice") at any time from the opening of business on the date that is 20 Business Days prior to a Repurchase Date until the close of business on such Repurchase Date stating: (A) the certificate number of the 2021 Debenture which the Holder will deliver to be repurchased or if any of the 2021 Debentures is in the form of a Global Security, then a beneficial owner of a 2021 Debenture shall comply with the procedures of the Depositary applicable to the repurchase of a Global Security, (B) the portion of the Principal Amount of the 2021 Debenture which the Holder will deliver to be repurchased, which portion must be $1,000 or an integral multiple thereof, (C) that such 2021 Debenture shall be purchased as of the Repurchase Date pursuant to the terms and conditions specified under the caption "Repurchase by the Company at the Option of the Holder" of the 2021 Debentures and in this Indenture, (D) in the event that the Company elects, pursuant to Section 1502 hereof, to pay the Repurchase Price to be paid as of such Repurchase Date, in whole or in part, in Ordinary Shares but such portion of the Repurchase Price shall ultimately be payable to such Holder entirely in cash because any of the conditions to payment of the Repurchase Price in Ordinary Shares is not satisfied prior to the close of business on such Repurchase Date, as set forth in Section 1503 hereof, whether such Holder elects (i) to withdraw such Repurchase Notice as to some or all of the 2021 Debentures to which such Repurchase Notice relates (stating the Principal Amount at Maturity and certificate numbers of the 2021 Debentures as to which such withdrawal shall relate or if certificated 2021 Debentures have not been issued, a beneficial owner of a 2021 Debenture shall comply with the procedures of the Depositary applicable to the withdrawal of a Repurchase Notice), or (ii) to receive cash in respect of the entire Repurchase Price for all 2021 Debentures (or portions thereof) to which such Repurchase Notice relates, and (2) delivery of such 2021 Debenture to the Paying Agent prior to, on or after the Repurchase Date (together with all necessary endorsements) at the offices of the Paying Agent, such delivery being a condition to receipt by the Holder of the Repurchase Price therefor; provided, however, that such Repurchase Price shall be so paid pursuant to this Article Fifteen only if the 2021 Debenture so delivered to the Paying Agent shall conform in all respects to the description thereof in the related Repurchase Notice. 28

31 If a Holder, in such Holder's Repurchase Notice and in any written notice of withdrawal delivered by such Holder pursuant to the terms of Section 1509 hereof, fails to indicate such Holder's choice with respect to the election set forth in clause (D) of Section 1501(1), such Holder shall be deemed to have elected to receive cash in respect of the Repurchase Price for all 2021 Debentures subject to the Repurchase Notice in the circumstances set forth in such clause (D). The Company shall purchase from the Holder thereof, pursuant to this Article Fifteen, a portion of a 2021 Debenture if the Principal Amount of such portion is $1,000 or an integral multiple of $1,000. Provisions of this Indenture that apply to the purchase of all of a 2021 Debenture also apply to the purchase of such portion of such 2021 Debenture. Any purchase by the Company contemplated pursuant to the provisions of this Article Fifteen shall be consummated by the delivery of the consideration to be received by the Holder promptly following the later of the Repurchase Date and the time of delivery of the 2021 Debenture. Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the Repurchase Notice contemplated by this Section 1501 shall have the right to withdraw such Repurchase Notice at any time prior to the close of business on the Repurchase Date by delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 1509. The Paying Agent shall promptly notify the Company of the receipt by it of any Repurchase Notice or written notice of withdrawal thereof. Section 1502 The Company's Right to Elect Manner of Payment of Repurchase Price (a) The Repurchase Price of 2021 Debentures or a specified portion thereof in respect of which a Repurchase Notice pursuant to Section 1501 has been given will be paid by the Company, at the election of the Company, with cash or Ordinary Shares or in any combination of cash and Ordinary Shares, subject to the conditions set forth in Section 1503 and 1504 hereof. The Company shall designate, in the Company Notice delivered pursuant to Section 1505 hereof, whether the Company will purchase the 2021 Debentures for cash or Ordinary Shares, or, if a combination thereof, the percentages of the Repurchase Price of 2021 Debentures in respect of which it will pay in cash and Ordinary Shares; provided that the Company will pay cash for fractional interests in Ordinary Shares. For purposes of determining the existence of potential fractional interests, all 2021 Debentures subject to purchase by the Company held by a Holder shall be considered together (no matter how many separate certificates are to be presented). Each Holder whose 2021 Debentures are purchased pursuant to this Article Fifteen shall receive the same percentage of cash or Ordinary Shares in payment of the Repurchase Price for such 2021 Debentures, except (i) as provided in Section 1504 with regard to the payment of cash in lieu of fractional 29

32 Ordinary Shares and (ii) in the event that the Company is unable to purchase the 2021 Debentures of a Holder or Holders for Ordinary Shares because any necessary qualifications or registrations of the Ordinary Shares under applicable state securities laws cannot be obtained, the Company may purchase the 2021 Debentures of such Holder or Holders for cash. The Company may not change its election with respect to the consideration (or components or percentages of components thereof) to be paid once the Company has given its Company Notice to Holders except pursuant to this Section 1502 or pursuant to Section 1504 in the event of a failure to satisfy, prior to the close of business on the Repurchase Date, any condition to the payment of the Repurchase Price, in whole or in part, in Ordinary Shares. At least three Business Days before the Company Notice Date, the Company shall deliver an Officers' Certificate to the Trustee specifying: (i) the manner of payment selected by the Company, (ii) the information required by Section 1505, (iii) if the Company elects to pay the Repurchase Price, or a specified percentage thereof, in Ordinary Shares, that the conditions to such manner of payment set forth in Section 1504 have been or will be complied with, and (iv) whether the Company desires the Trustee to give the Company Notice required by Section 1505. Section 1503 Purchase with Cash On each Repurchase Date, at the option of the Company, the Repurchase Price of 2021 Debentures in respect of which a Repurchase Notice pursuant to Section 1501 has been given, or a specified percentage thereof, may be paid by the Company with cash equal to the aggregate Repurchase Price of such 2021 Debentures. If the Company elects to purchase 2021 Debentures with cash, the Company Notice, as provided in Section 1505, shall be sent to Holders (and to beneficial owners as required by applicable law) not less than 20 Business Days prior to such Purchase Date (the "Company Notice Date"). Section 1504 Payment by Issuance of Ordinary Shares On each Repurchase Date, at the option of the Company, the Repurchase Price of 2021 Debentures in respect of which a Repurchase Notice pursuant to Section 1501 has been given, or a specified percentage thereof, may be paid by the Company by the issuance of a number of Ordinary Shares equal to the quotient obtained by dividing (i) the amount of cash to which the Holders would have been entitled had the Company elected to pay all or such specified percentage, as the case may be, of the Repurchase Price of such 2021 Debentures in cash by (ii) the Market Price of an Ordinary Share, subject to the next succeeding paragraph. 30

33 The Company will not issue a fractional Ordinary Share in payment of the Repurchase Price. Instead the Company will pay cash for the current market value of the fractional share. The current market value of a fraction of an Ordinary Share shall be determined by multiplying the Market Price by such fraction and rounding the product to the nearest whole cent with one half cent being rounded upwards. It is understood that if a Holder elects to have more than one 2021 Debenture repurchased, the number of Ordinary Shares shall be based on the aggregate amount of 2021 Debentures to be repurchased. If the Company elects to purchase the 2021 Debentures by the issuance of Ordinary Shares, the Company Notice, as provided in Section 1505, shall be sent to the Holders (and to beneficial owners as required by applicable law) not later than the Company Notice Date. The Company's right to exercise its election to purchase the 2021 Debentures pursuant to this Article Fifteen through the issuance of Ordinary Shares shall be conditioned upon: (i) the Company's not having given its Company Notice of an election to pay entirely in cash and its giving of timely Company Notice of election to purchase all or a specified percentage of the 2021 Debentures with Ordinary Shares as provided herein; (ii) the registration of the Ordinary Shares to be issued in respect of the payment of the Repurchase Price under the Securities Act or the Exchange Act, in each case, if required for the initial issuance thereof; (iii) any necessary qualification or registration under applicable state securities laws or the availability of an exemption from such qualification and registration; and (iv) the receipt by the Trustee of an Officers' Certificate and an Opinion of Counsel each stating that (A) the terms of the issuance of the Ordinary Shares are in conformity with this Indenture and (B) the Ordinary Shares to be issued by the Company in payment of the Repurchase Price in respect of 2021 Debentures have been duly authorized and, when issued and delivered pursuant to the terms of this Indenture in payment of the Repurchase Price in respect of the 2021 Debentures, will be validly issued, fully paid and non-assessable and, to the best of such counsel's knowledge, free from preemptive rights, and, in the case of such Officer's Certificate, stating that conditions (i), (ii) and (iii) above and the condition set forth in the third paragraph of this Section 1504 have been satisfied and, in the case of such Opinion of Counsel, stating that conditions (ii) and (iii) above have been satisfied. Such Officers' Certificate shall also set forth the number of Ordinary Shares to be issued for each $1,000 Principal Amount of 2021 Debentures and the Sale Price of an Ordinary Share on each trading day during the period 31

34 commencing on the first trading day of the period during which the Market Price is calculated and ending three Business Days prior to the applicable Repurchase Date. The Company may pay the Repurchase Price (or any portion thereof) in Ordinary Shares only if the information necessary to calculate the Market Price is published in The Wall Street Journal or another daily newspaper of national circulation. If the foregoing conditions are not satisfied with respect to a Holder or Holders prior to the close of business on the Repurchase Date and the Company has elected to repurchase the 2021 Debentures pursuant to this Article Fifteen through the issuance of Ordinary Shares, the Company shall pay, without further notice, the entire Repurchase Price of the 2021 Debentures of such Holder or Holders in cash. The "Market Price" means the average of the Sale Prices of the Ordinary Shares for the five trading day period ending on the third Business Day prior to the applicable Repurchase Date (or if the third Business Day prior to the applicable Repurchase Date is not a trading day, then on the last trading day prior to such third Business Day), appropriately adjusted to take into account the occurrence, during the period commencing on the first of such trading days during such five trading day period and ending on such Repurchase Date, of any event described in Section 1406; subject, however, to the conditions set forth in Sections 1406(f) and 1407. The "Sale Price" of the Ordinary Shares on any date means the closing sale price per Ordinary Share (or, if no closing sale price is reported, the average of the closing bid and ask prices or, if more than one in either case, the average of the average closing bid and average closing ask prices) on such date as reported in the composite transactions for the principal United States securities exchange on which the Ordinary Shares are traded or, if the Ordinary Shares are not listed on a United States national or regional securities exchange, as reported by the National Association of Securities Dealers Automated Quotation System or its successors. Section 1505 Notice of Election The Company's notice of election to repurchase with cash or Ordinary Shares or any combination thereof shall be sent to the Holders in the manner provided in Section 106 at the time specified in Section 1503 or 1504, as applicable (the "Company Notice"). Such Company Notice shall state the manner of payment elected and shall contain the following information: In the event the Company has elected to pay the Repurchase Price (or a specified percentage thereof) with Ordinary Shares, the Company Notice shall: (1) state that each Holder will receive Ordinary Shares with a Market Price equal to the Repurchase Price (or such specified percentage thereof) of the 2021 Debentures held by such Holder (except any cash amount to be paid in lieu of fractional shares); 32

35 (2) set forth the method of calculating the Market Price of the Ordinary Shares; and (3) state that because the Market Price of Ordinary Shares will be determined prior to the Repurchase Date, Holders will bear the market risk with respect to the value of the Ordinary Shares to be received from the date such Market Price is determined to the Repurchase Date. In any case, each Company Notice shall include a form of Repurchase Notice to be completed by a Holder and shall state: (A) the Repurchase Price and the Conversion Rate; (B) the name and address of the Paying Agent and the Conversion Agent; (C) that 2021 Debentures as to which a Repurchase Notice has been given may be converted pursuant to Article Fourteen hereof only if the applicable Repurchase Notice has been withdrawn in accordance with the terms of this Indenture; (D) that 2021 Debentures must be surrendered to the Paying Agent to collect payment; (E) that the Repurchase Price for any 2021 Debenture as to which a Repurchase Notice has been given and not withdrawn will be paid promptly following the later of the Repurchase Date and the time of surrender of such 2021 Debenture as described in (D); (F) the procedures the Holder must follow to exercise repurchase rights under this Article Fifteen and a brief description of those rights; (G) briefly, the conversion rights of the 2021 Debentures; and (H) the procedures for withdrawing a Repurchase Notice (including, without limitation, for a conditional withdrawal pursuant to the terms of Section 1501 or 1509). At the Company's request, the Trustee shall give such Company Notice in the Company's name and at the Company's expense; provided, however, that, in all cases, the text of such Company Notice shall be prepared by the Company. Upon determination of the actual number of Ordinary Shares to be issued for each $1,000 Principal Amount of 2021 Debentures, the Company will publish such determination at the Company's Web site on the World Wide Web or through such other public medium as the Company may use at that time. 33

36 Section 1506 Covenants of the Company All Ordinary Shares delivered upon purchase of the 2021 Debentures shall be newly issued shares, shall be duly authorized, validly issued, fully paid and nonassessable and shall be free from preemptive rights and free of any lien or adverse claim. The Company shall use its reasonable efforts to list or cause to have quoted any Ordinary Shares to be issued to purchase 2021 Debentures on the principal national securities exchange or over-the-counter or other domestic market on which the Ordinary Shares are then listed or quoted. Section 1507 Procedure upon Repurchase The Company shall deposit cash (in respect of a cash purchase under Section 1503 or for fractional Ordinary Shares, as applicable) or Ordinary Shares, or a combination thereof, as applicable, at the time and in the manner as provided in Section 1510, sufficient to pay the aggregate Repurchase Price of all 2021 Debentures to be purchased on the applicable Repurchase Date pursuant to this Article Fifteen. As soon as practicable after the Repurchase Date, the Company shall deliver to each Holder entitled to receive Ordinary Shares through the Paying Agent, a certificate for the number of full Ordinary Shares issuable in payment of the Repurchase Price and cash in lieu of any fractional Ordinary Shares. The Person in whose name the certificate for Ordinary Shares is registered shall be treated as a holder of record of Ordinary Shares on the Business Day following the Repurchase Date. Subject to Section 1504, no payment or adjustment will be made for dividends on the Ordinary Shares the record date for which occurred on or prior to the Repurchase Date. Section 1508 Taxes If a Holder of a 2021 Debenture is paid in Ordinary Shares, the Company shall pay any documentary, stamp or similar issue or transfer tax due on such issue of Ordinary Shares. However, the Holder shall pay any such tax which is due because the Holder requests the Ordinary Shares to be issued in a name other than the Holder's name. The Paying Agent may refuse to deliver the certificates representing the Ordinary Shares being issued in a name other than the Holder's name until the Paying Agent receives a sum sufficient to pay any tax which will be due because the Ordinary Shares are to be issued in a name other than the Holder's name. Nothing herein shall preclude any income tax withholding required by law or regulations, subject to the payment by the Company of any Tax Additional Amounts required by the terms of each 2021 Debenture. Section 1509 Effect of Repurchase Notice Upon receipt by the Paying Agent of the Repurchase Notice, the Holder of the 2021 Debenture in respect of which such Repurchase Notice was given shall (unless such Repurchase Notice is withdrawn as specified in the following two 34

37 paragraphs) thereafter be entitled to receive solely the Repurchase Price with respect to such 2021 Debenture. Such Repurchase Price shall be paid to such Holder, subject to receipt of funds and/or Ordinary Shares by the Paying Agent, promptly following the later of (x) the Repurchase Date with respect to such 2021 Debenture (provided the conditions in Section 1501 have been satisfied) and (y) the time of delivery of such 2021 Debenture to the Paying Agent by the Holder thereof in the manner required by Section 1501. 2021 Debentures in respect of which a Repurchase Notice has been given by the Holder thereof may not be converted pursuant to Article Fourteen hereof on or after the date of the delivery of such Repurchase Notice unless such Repurchase Notice has first been validly withdrawn as specified in the following two paragraphs. A Repurchase Notice may be withdrawn by means of a written notice of withdrawal delivered to the office of the Paying Agent in accordance with the Repurchase Notice at any time prior to the close of business on the applicable Repurchase Date specifying: (1) the certificate number of the 2021 Debenture in respect of which such notice of withdrawal is being submitted or if any of the 2021 Debentures is in the form of a Global Security, then a beneficial owner of a 2021 Debenture shall comply with the procedures of the Depositary applicable to the withdrawal of a Repurchase Notice; (2) the Principal Amount of the 2021 Debenture with respect to which such notice of withdrawal is being submitted; and (3) the Principal Amount, if any, of such 2021 Debenture which remains subject to the original Repurchase Notice and which has been or will be delivered for purchase by the Company. A written notice of withdrawal of a Repurchase Notice may be in the form set forth in the preceding paragraph or may be in the form of (i) a conditional withdrawal contained in a Repurchase Notice pursuant to the terms of Section 1501(1)(D) or (ii) a conditional withdrawal containing the information set forth in Section 1501(1)(D) and the preceding paragraph and contained in a written notice of withdrawal delivered to the Paying Agent as set forth in the preceding paragraph. There shall be no purchase of any 2021 Debentures pursuant to this Article Fifteen (other than through the issuance of Ordinary Shares in payment of the Repurchase Price, including cash in lieu of fractional shares) if there has occurred (prior to, on or after, as the case may be, the giving, by the Holders of such 2021 Debentures, of the required Repurchase Notice) and is continuing an Event of Default (other than a default in the payment of the Repurchase Price with respect to such 2021 Debentures). The Paying Agent will promptly return to the respective Holders thereof any 2021 Debentures (x) with respect to which a Repurchase Notice has been withdrawn in compliance with this Indenture, or (y) 35

38 held by it during the continuance of an Event of Default (other than a default in the payment of the Repurchase Price with respect to such 2021 Debentures) in which case, upon such return, the Repurchase Notice with respect thereto shall be deemed to have been withdrawn. Section 1510 Deposit of Repurchase Price Prior to 11:00 a.m. (New York City time) on the Business Day following the Repurchase Date, the Company shall deposit with the Trustee or with the Paying Agent an amount of money (in immediately available funds if deposited on such Business Day) and/or Ordinary Shares, if permitted hereunder, sufficient to pay the aggregate Repurchase Price of all of the 2021 Debentures or portions thereof which are to be purchased as of the Repurchase Date. Section 1511 Securities Repurchased in Part Any 2021 Debenture which is to be purchased only in part shall be surrendered at the office of the Paying Agent (with, if the Company or the Trustee so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the Company or the Trustee duly executed by, the Holder thereof or such Holder's attorney duly authorized in writing) and the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such 2021 Debenture, without service charge, a new 2021 Debenture or 2021 Debentures, of any authorized denomination as requested by such Holder in aggregate Principal Amount equal to, and in exchange for, the portion of the Principal Amount of the 2021 Debenture so surrendered which is not purchased. Section 1512 Comply with Securities Laws Upon Purchase of Securities In connection with any offer to purchase or purchase of 2021 Debentures under this Article Fifteen (provided that such offer or purchase constitutes an "issuer tender offer" for purposes of Rule 13e-4 (which term, as used herein, includes any successor provision thereto) under the Exchange Act at the time of such offer or purchase), the Company shall (i) comply with Rule 13e-4 under the Exchange Act, (ii) file the related Schedule TO (or any successor schedule, form or report) under the Exchange Act, and (iii) otherwise comply with all Federal and state securities laws so as to permit the rights and obligations under Article Fifteen to be exercised in the time and in the manner specified in this Article Fifteen. Section 1513 Repayment to the Company The Trustee and the Paying Agent shall return to the Company any cash or Ordinary Shares that remain unclaimed for two years, subject to applicable unclaimed property law, together with interest or dividends, if any, thereon held by them for the payment of the Repurchase Price; provided, however, that to the extent that the aggregate amount of cash or Ordinary Shares deposited by the Company pursuant to Section 1510 exceeds the aggregate Repurchase Price of the 36

39 2021 Debentures or portions thereof which the Company is obligated to purchase as of the Repurchase Date, then promptly after the Business Day following the Repurchase Date the Trustee shall return any such excess to the Company together with interest or dividends, if any, thereon. After that, Holders entitled to money must look to the Company for payment as general creditors, unless an applicable abandoned property law designates another Person. Section 1514 Conversion Arrangement on Repurchase Any 2021 Debentures required to be repurchased under this Article Fifteen, unless surrendered for conversion before the close of business on the Repurchase Date, may be deemed to be purchased from the Holders of such 2021 Debentures for an amount in cash not less than the Repurchase Price, by one or more investment bankers or other purchasers who may agree with the Company to purchase such 2021 Debentures from the Holders, to convert them into Ordinary Shares of the Company and to make payment for such 2021 Debentures to the Trustee in trust for such Holders. SECTION 214 Amendment to Events of Default. (a) Clause (1) of Section 501 of the Indenture is amended to read in its entirety as follows: (1) default in the payment of any interest or of any Tax Additional Amounts upon any 2021 Debentures when such interest or Tax Additional Amounts become due and payable and continuance of such default for a period of 30 days; (b) Clause (2) of Section 501 of the Indenture is amended to read in its entirety as follows: (2) default in the payment of the Principal Amount, the Redemption Price, the Repurchase Price or the Change in Control Purchase Price when the same becomes due and payable at its Stated Maturity upon redemption, upon declaration of acceleration, when due for repurchase by the Company or otherwise; ARTICLE THREE MISCELLANEOUS PROVISIONS SECTION 301 Integral Part. This Fourth Supplemental Indenture constitutes an integral part of the Indenture. SECTION 302 General Definitions. For all purposes of this Fourth Supplemental Indenture: 37

40 (a) capitalized terms used herein without definition shall have the meanings specified in the Indenture; and (b) the terms "herein", "hereof", "hereunder" and other words of similar import refer to this Fourth Supplemental Indenture. SECTION 303 Adoption, Ratification and Confirmation. The Indenture, as supplemented and amended by this Fourth Supplemental Indenture, is in all respects hereby adopted, ratified and confirmed. SECTION 304 Counterparts. This Fourth Supplemental Indenture may be executed in any number of counterparts, each of which when so executed shall be deemed an original; and all such counterparts shall together constitute but one and the same instrument. SECTION 305 Governing Law. THIS FOURTH SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, BUT WITHOUT GIVING EFFECT TO THE APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY. 38

41 IN WITNESS WHEREOF, the parties hereto have caused this Fourth Supplemental Indenture to be duly executed and their respective corporate seals to be hereunto fixed and attested as of the day and year first written above. TRANSOCEAN SEDCO FOREX INC. [SEAL] By: ------------------------------ Name: ------------------------ Title: ------------------------ THE CHASE MANHATTAN BANK, AS TRUSTEE [SEAL] By: ------------------------------ Name: ------------------------ Title: ------------------------ 39

42 STATE OF TEXAS } COUNTY OF HARRIS } The foregoing instrument was acknowledged before me on May ______, 2001, by ____________________, the __________________ of TRANSOCEAN SEDCO FOREX INC., a Cayman Islands exempted company limited by shares, on behalf of said company. --------------------- Notary Public STATE OF TEXAS } COUNTY OF HARRIS } The foregoing instrument was acknowledged before me on May _____, 2001, by Mauri J. Cowen, a Vice President and Trust Officer of The Chase Manhattan Bank, a New York banking corporation, on behalf of said banking corporation. --------------------- Notary Public 40

43 ANNEX A [FORM OF GLOBAL SECURITY] UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR THE INDIVIDUAL SECURITIES REPRESENTED HEREBY, THIS GLOBAL SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. FORM OF 1.5% CONVERTIBLE DEBENTURES DUE MAY 15, 2021 TRANSOCEAN SEDCO FOREX INC. Issue Date: May 11, 2001 Maturity: May 15, 2021 Principal Amount: $400,000,000 CUSIP: 893830 AD1 Registered: No. R- Transocean Sedco Forex Inc., a Cayman Islands exempted company limited by shares (herein called the "Company", which term includes any successor corporation under the indenture hereinafter referred to), for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of Four Hundred Million Dollars ($400,000,000) on May 15, 2021 and to pay interest thereon and Tax Additional Amounts, if any, in immediately available funds as specified on the other side of this Security. This Security is convertible as specified on the other side of this Security. Payment of the principal of and interest and Tax Additional Amounts, if any, on this Security will be made at the office or agency of the Company maintained for that purpose in the City of New York, New York or Dallas, Texas in such coin or currency of the United States of A-1

44 America as at the time of payment is legal tender for payment of public and private debts; provided, however, that at the option of the Company, payment of interest and Tax Additional Amounts, if any, may be made by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register or by wire transfer of immediately available funds to the accounts designated by the Holder of this Security. Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal. Dated: TRANSOCEAN SEDCO FOREX INC. By: ------------------------------ Name: Title: Attest: - ---------------------------- Assistant Secretary [SEAL] A-2

45 TRUSTEE'S CERTIFICATE OF AUTHENTICATION This is one of the Securities of the series designated therein referred to in the within-mentioned Indenture. THE CHASE MANHATTAN BANK, AS TRUSTEE ------------------------------------ Authorized Signature Date of Authentication: ------------------ A-3

46 [FORM OF REVERSE SIDE OF SECURITY] TRANSOCEAN SEDCO FOREX INC. 1.5% CONVERTIBLE DEBENTURE DUE MAY 15, 2021 This Security is one of a duly authorized issue of senior securities of the Company issued and to be issued in one or more series under an Indenture, dated as of April 15, 1997, as amended by the First Supplemental Indenture thereto dated as of April 15, 1997, the Second Supplemental Indenture thereto dated as of May 14, 1999, the Third Supplemental Indenture thereto dated as of May 24, 2000 and the Fourth Supplemental Indenture thereto dated as of May 11, 2001 (as so amended, herein called the "Indenture"), between the Company and The Chase Manhattan Bank, as Trustee (herein called the "Trustee", which term includes any successor trustee under the Indenture), or their respective predecessors, as applicable, to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof, limited in aggregate principal amount to $400,000,000. As used herein, the term "Securities" means securities of the series designated on the face hereof except that, where the context requires that such term be construed as including another series of securities (e.g., where phrase such as "Securities of each series" or Securities of any series" or similar phrase are used), the term "Securities" means securities of any series issued or to be issued under the Indenture. INTEREST The rate at which this Security shall bear interest shall be 1.5% per annum. The date from which interest shall accrue for this Security shall be May 11, 2001. The Interest Payment Dates on which interest on this Security shall be payable are May 15 and November 15 of each year, commencing on November 15, 2001. The Regular Record Date for the interest payable on this Security on any Interest Payment Date shall be the May 1 or November 1, as the case may be, immediately preceding such Interest Payment Date. Interest will cease to accrue on this Security upon its maturity, conversion, purchase by the Company at the option of a holder or redemption. METHOD OF PAYMENT Payments in respect of principal of and interest, if any, on the Securities shall be made by the Company in immediately available funds. OPTIONAL REDEMPTION No sinking fund is provided for the Securities of this series. After May 20, 2006, the Securities of this series are redeemable as a whole, or from time to time in part, at any time at the option of the Company at a redemption price (the "Redemption Price") equal to the Principal Amount plus accrued and unpaid interest up to but not including the Redemption Date. A-4

47 If the Company redeems less than all of the outstanding Securities, the Trustee will select the Securities to be redeemed (i) by lot, (ii) pro rata or (iii) by another method the Trustee considers fair and appropriate. If the Trustee selects a portion of a Holder's Securities for partial redemption and the Holder converts a portion of the same Securities, the converted portion will be deemed to be from the portion selected for redemption. NOTICE OF REDEMPTION Notice of redemption will be mailed by first-class mail at least 20 days but not more than 60 days before the Redemption Date to each Holder of Securities to be redeemed at its registered address. Securities in denominations larger than $1,000 Principal Amount may be redeemed in part, but only in whole multiples of $1,000. On and after the Redemption Date, subject to the deposit with the Paying Agent of funds sufficient to pay the Redemption Price, interest ceases to accrue on Securities or portions thereof called for redemption. PURCHASE OF SECURITIES AT OPTION OF HOLDER UPON A CHANGE IN CONTROL At the option of the Holder and subject to the terms and conditions of the Indenture, the Company shall become obligated to purchase all or any part specified by the Holder (so long as the Principal Amount of such part is $1,000 or an integral multiple of $1,000 in excess thereof) of the Securities held by such Holder on the date that is 35 Business Days after the occurrence of a Change in Control, at a Change in Control Purchase Price equal to the Principal Amount plus accrued and unpaid interest up to but not including the Change in Control Purchase Date. The Holder shall have the right to withdraw any Change in Control Purchase Notice (in whole or in a portion thereof that is $1,000 Principal Amount or an integral multiple of $1,000 in excess thereof) at any time prior to the close of business on the Business Day prior to the Change in Control Purchase Date by delivering a written notice of withdrawal to the Paying Agent in accordance with the terms of the Indenture. CONVERSION A Holder of a Security may convert the Security into Ordinary Shares at any time until the close of business on the Business Day prior to the Stated Maturity; provided, that one of the conditions in the following paragraph is satisfied; provided, further, that if the Security is called for redemption, the conversion right will terminate at the close of business on the fourth Trading Day prior to the earlier of (a) May 15, 2021 and (b) the date on which such Security (or portion thereof) is redeemed (unless the Company shall default in making the redemption payment when due, in which case the conversion right shall terminate at the close of business on the date such default is cured and such Security is redeemed). A Security in respect of which a Holder has delivered a Repurchase Notice exercising the option of such Holder to require the Company to purchase such Security may be converted only if such notice of exercise is withdrawn in accordance with the terms of the Indenture. The initial Conversion Rate is 13.8627 Ordinary Shares per $1,000 Principal Amount, subject to adjustment in certain events described in the Indenture. The Company will deliver cash or a check in lieu of any fractional Ordinary Share. Holders may surrender Securities for conversion into Ordinary Shares on a Conversion Date if the Sale Price (as defined in the Indenture) of the Ordinary Shares is greater than 110% of A-5

48 the then current Conversion Price for at least 20 Trading Days in the 30 Trading Day period ending on the Trading Day immediately prior to the Conversion Date. The "Conversion Price", as of any date, means an amount per Ordinary Share equal to the quotient of (i) $1,000 (representing the Principal Amount of a Security with such Principal Amount) divided by (ii) the number of Ordinary Shares issuable upon conversion of a Security with a $1,000 Principal Amount on such Conversion Date. In addition, a Holder may surrender for conversion a Security or portion of a Security which has been called for redemption pursuant to the section "Optional Redemption" hereof, even if the foregoing provision has not been satisfied. In the event that the Company declares (a) a dividend or distribution described in Section 1406(b) of the Indenture, or (b) a dividend or distribution described in Section 1406(c) or (d)(1) of the Indenture where the fair market value of such dividend or distribution per Ordinary Share, as determined pursuant to Section 1406(c) or (d)(l), as applicable, of the Indenture, exceeds 15% of the Sale Price of the Ordinary Shares as of the Business Day prior to the date of declaration, the Securities may be surrendered for conversion beginning on the date the Company gives notice to the Holders of such right, which shall be not less than 20 days prior to the ex-dividend date for such dividend or distribution and Securities may be surrendered for conversion at any time thereafter until the close of business on the Business Day immediately prior to the ex-dividend date or until the Company announces that such distribution will not take place. Finally, in the event that the Company is a party to a reclassification or change, consolidation, merger or scheme of arrangement under Cayman Islands law, or a sale or conveyance of all or substantially all of the Company's assets to another person, pursuant to which the Ordinary Shares would be converted into shares of stock and other securities and property (including cash) as set forth in Section 1411 of the Indenture, the Securities may be surrendered for conversion at any time from and after the date which is 15 days prior to the date the Company announces as the anticipated effective time until 15 days after the actual date of such transaction. Securities surrendered for conversion after the close of business on any Regular Record Date immediately preceding any Interest Payment Date and prior to the opening of business of such Interest Payment Date (except Securities or portions of Securities to be redeemed on a Redemption Date occurring during such period) must be accompanied by payment from the Holder of an amount equal to the interest thereon that the registered Holder is to receive from the Company on such Interest Payment Date. Except where Securities surrendered for conversion must be accompanied by payment as described above, no interest on converted Securities will be payable by the Company on any Interest Payment Date subsequent to the date of conversion. A Holder may convert a portion of a Security if the Principal Amount of such portion is $1,000 or an integral multiple of $1,000. No payment or adjustment will be made for dividends on the Ordinary Shares except as provided in the Indenture. No fractional shares will be issued upon conversion; in lieu thereof, an amount will be paid in cash based upon the closing price of the Ordinary Shares on the Trading Day immediately prior to the Conversion Date. To convert a Security, a Holder must (a) complete and manually sign the conversion notice set forth below and deliver such notice to a Conversion Agent, (b) surrender the Security to the Conversion Agent, (c) furnish appropriate endorsements and transfer documents (including A-6

49 any certification that may be required under applicable law) if required by the Conversion Agent, and (d) pay any transfer or similar tax, if required. REPURCHASE BY THE COMPANY AT THE OPTION OF THE HOLDER Subject to the terms and conditions of the Indenture, the Company shall become obligated to purchase, at the option of the Holder, the Securities held by such Holder on May 15, 2006, May 15, 2011 and May 15, 2016 (each, a "Repurchase Date"), upon delivery of a Repurchase Notice containing the information set forth in the Indenture, at any time from the opening of business on the date that is 20 Business Days prior to such Repurchase Date until the close of business on such Repurchase Date and upon delivery of the Securities to the Paying Agent by the Holder as set forth in the Indenture. The "Repurchase Price" shall be equal to the Principal Amount plus accrued and unpaid interest up to but not including the Business Day immediately following the Repurchase Date. The Repurchase Price may be paid, at the option of the Company, in cash or by the issuance of Ordinary Shares at the Conversion Rate, or in any combination thereof. Interest due on an Interest Payment Date that is also a Repurchase Date will be paid to the holder of record on the relevant Regular Record Date and will not be included in the Repurchase Price. Holders have the right to withdraw any Repurchase Notice by delivering to the Paying Agent a written notice of withdrawal prior to the close of business on the Repurchase Date in accordance with the provisions of the Indenture. If cash (and/or securities if permitted under the Indenture) sufficient to pay the Repurchase Price of all Securities or portions thereof to be purchased as of the Repurchase Date, is deposited with the Paying Agent on the Business Day following the Repurchase Date, interest ceases to accrue on such Securities (or portions thereof) immediately after such Repurchase Date, and the Holder thereof shall have no other rights as such (other than the right to receive the Repurchase Price upon surrender of such Security). CONVERSION ARRANGEMENT ON CALL FOR REDEMPTION Any Securities called for redemption, unless surrendered for conversion before the close of business on the Redemption Date, may be deemed to be purchased from the Holders of such Securities at an amount not less than the Redemption Price, by one or more investment bankers or other purchasers who may agree with the Company to purchase such Securities from the Holders, to convert them into Ordinary Shares of the Company and to make payment for such Securities to the Paying Agent in trust for such Holders. TAX ADDITIONAL AMOUNTS The Company agrees that any amounts to be paid by the Company hereunder with respect to any Security shall be paid without deduction or withholding for any and all present and future withholding taxes, levies, imposts and charges whatsoever imposed by or for the account of the Cayman Islands or any political subdivision or taxing authority thereof or therein, or if deduction or withholding of any such taxes, levies, imposts or charges shall at any time be required by the Cayman Islands or any such subdivision or authority thereof or therein, the Company will A-7

50 (subject to compliance by the Holder of such Security with any relevant administrative requirements) pay such additional amounts ("Tax Additional Amounts") in respect of principal amount, premiums (if any), Redemption Price, Repurchase Price and interest (if any), in accordance with the terms of the Securities and the Indenture, as the case may be, in order that the amounts received by the Holder of the Security, after such deduction or withholding, shall equal the respective amounts of principal, premium (if any), Redemption Price, Repurchase Price and interest (if any), in accordance with the terms of the Securities and the Indenture, as specified in such Securities to which such Holder is entitled; provided, however, that the foregoing shall not apply to: (1) any such tax, levy, impost or charge which would not be payable or due but for the fact that (A) the Holder of a Security (or a fiduciary, settlor, beneficiary of, member or shareholder of, such Holder, if such Holder is an estate, trust, partnership or corporation) is a domiciliary, national or resident of, or engaging in business or maintaining a permanent establishment or being physically present in, the Cayman Islands or such political subdivision or otherwise having some present or former connection with the Cayman Islands other than the holding or ownership of such Security or the collection of the respective amounts of principal, premium (if any), Redemption Price, Repurchase Price and interest (if any), in accordance with the terms of the Security and the Indenture, or the enforcement of such Security or (B) where presentation is required, such Security was presented more than 30 days after the date such payment became due or was provided for, whichever is later; (2) any estate, inheritance, gift, sales, transfer, excise, personal property or similar tax, levy, impost or charge; (3) any tax, levy, impost or charge which is payable otherwise than by withholding from payment of the respective amounts of principal, premium (if any), Redemption Price, Repurchase Price and interest (if any); (4) any tax, levy, impost or charge which would not have been imposed but for the failure to comply with certification, information, documentation or other reporting requirements concerning the nationality, residence, identity or connections with the relevant tax authority of the Holder or beneficial owner of such Security, if such compliance is required by statute or by regulation as a precondition to relief or exemption from such tax, levy, impost or charge; or (5) any combination of (1) through (4); nor shall any Tax Additional Amounts be paid to any Holder who is a fiduciary or partnership or other than the sole beneficial owner of such Security to the extent that a beneficiary or settlor with respect to such fiduciary, or a member of such partnership or a beneficial owner thereof, would not have been entitled to the payment of such Tax Additional Amounts had such beneficiary, settlor, member or beneficial owner been the Holder of the Security. TRANSFER As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register, upon surrender of this Security for A-8

51 registration or transfer at the office or agency in a Place of Payment for Securities of this series, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities of this series, of any authorized denominations and for the same aggregate principal amount, executed by the Company and authenticated and delivered by the Trustee, will be issued to the designated transferee or transferees. The Securities of this series are issuable only in registered form without coupons in denominations of $1,000 and any integral multiple thereof. As provided in the Indenture and subject to certain limitations set forth therein and on the face of this Security, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series of a different authorized denomination as requested by the Holder surrendering the same. No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. Prior to due presentment of this Security for registration of transfer, the Company, the Trustee or any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary. AMENDMENT, SUPPLEMENT AND WAIVER; LIMITATION ON SUITS The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security. Subject to the right of the Holder of any Securities of this series to institute proceedings to enforce the Holder's right to receive payment of the principal thereof (and premium, if any) and interest thereon (or repurchase price thereof) and any Tax Additional Amounts with respect thereto and to receive shares on conversion, no Holder of the Securities of this series shall have any right to institute any proceeding, judicial or otherwise, with respect to the Indenture, or for the appointment of a receiver or trustee, or for any other remedy thereunder, unless A-9

52 (1) an Event of Default with respect to the Securities of this series shall have occurred and be continuing and such Holder has previously given written notice to the Trustee of such continuing Event of Default; (2) the Holders of not less than 25% in principal amount of the Outstanding Securities of this series shall have made written request to the Trustee to institute proceedings in respect of such Event of Default in its own name as Trustee hereunder; (3) such Holder or Holders have offered to the Trustee reasonable indemnity against the costs, expenses and liabilities to be incurred in compliance with such request; (4) the Trustee for 60 days after its receipt of such notice, request and offer of indemnity has failed to institute any such proceeding; and (5) no direction inconsistent with such written request has been given to the Trustee during such 60-day period by the Holders of a majority in principal amount of the Outstanding Securities of this series; it being understood and intended that no one or more of such Holders shall have the right in any manner whatever by virtue of, or by availing of, any provision of the Indenture to affect, disturb or prejudice the rights of any other of such Holders, or to obtain or to seek to obtain priority or preference over any other of such Holders or to enforce any right under the Indenture, except in the manner herein provided and for the equal and ratable benefit of all of such Holders. SUCCESSOR CORPORATION When a successor corporation assumes all the obligations of its predecessor under the Securities and the Indenture in accordance with the terms and conditions of the Indenture, the predecessor corporation will (except in certain circumstances specified in the Indenture) be released from those obligations. DEFAULTS AND REMEDIES If an Event of Default with respect to Securities of this series shall occur and be continuing, all unpaid Principal Amount plus accrued and unpaid interest through the acceleration date of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture. DEFEASANCE The Indenture contains provisions for defeasance at any time of the entire indebtedness of this Security or certain restrictive covenants and Events of Default with respect to this Security, in each case upon compliance with certain conditions set forth in the Indenture. NO RECOURSE AGAINST OTHERS No recourse shall be had for the payment of the principal of or the interest, if any, on this Security, for any claim based hereon, or otherwise in respect hereof, or based on or in respect of A-10

53 the Indenture or any indenture supplemental thereto, against any incorporator, shareholder, officer or directory, as such, past, present or future, of the Company or of any successor corporation, whether by virtue of any constitution, statute or rule of law or by the enforcement of any assessment of penalty or otherwise, all such liability being, by acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released. INDENTURE TO CONTROL; GOVERNING LAW In the case of any conflict between the provisions of this Security and the Indenture, the provisions of the Indenture shall control. THE INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, BUT WITHOUT GIVING EFFECT TO THE APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY. DEFINITIONS All terms defined in the Indenture and used in this Security but not specifically defined herein are used herein as so defined. A-11

54 CONVERSION NOTICE To convert this Security into Ordinary Shares of the Company, check the box: [ ] To convert only part of this Security, state the Principal Amount to be converted (must be $1,000 or a multiple of $1,000): $______________. If you want the stock certificate made out in another person's name, fill in the form below: - -------------------------------------------------------------------------------- (Insert other person's soc. sec. or tax I.D. no.) - -------------------------------------------------------------------------------- (Print or type other person's name, address and zip code) Your Signature: Date: ---------------------------------- ---------------------- (Sign exactly as your name appears on the other side of this Security) *Signature guaranteed by: ------------------------------------------------------- By: -------------------------------- - -------- * The signature must be guaranteed by an institution which is a member of one of the following recognized signature guaranty programs: (i) the Securities Transfer Agent Medallion Program (STAMP); (ii) the New York Stock Exchange Medallion Program (MSP); (iii) the Stock Exchange Medallion Program (SEMP); or (iv) such other guaranty program acceptable to the Trustee. A-12

55 OPTION OF HOLDER TO ELECT PURCHASE ON CHANGE IN CONTROL If you want to elect to have this Security purchased, in whole or in part, by the Company pursuant to Section 1110 of the Indenture, check the following box: [ ] If you want to have only part of this Security purchased by the Company pursuant to Section 1110 of the Indenture, state the Principal Amount you want to be purchased (must be $1,000 or a multiple of $1,000): $_______________ Your Signature: Date: ---------------------------------- ---------------------- (Sign exactly as your name appears on the other side of this Security) *Signature guaranteed by: ------------------------------------------------------ By: ------------------------------ - ----------- * The signature must be guaranteed by an institution which is a member of one of the following recognized signature guaranty programs: (i) the Securities Transfer Agent Medallion Program (STAMP); (ii) the New York Stock Exchange Medallion Program (MSP); (iii) the Stock Exchange Medallion Program (SEMP); or (iv) such other guaranty program acceptable to the Trustee. A-13

1 EXHIBIT 5.1 [Opinion of Baker Botts L.L.P. One Shell Plaza 910 Louisiana Houston, Texas 77002] May 10, 2001 Transocean Sedco Forex Inc. (a Cayman Islands Exempted Company) 4 Greenway Plaza Houston, Texas 77046 United States of America Gentlemen, As set forth in a Registration Statement on Form S-3 (Registration No. 333-58604; the "Registration Statement") filed with the Securities and Exchange Commission (the "Commission") by Transocean Sedco Forex Inc., a Cayman Islands exempted company (the "Company"), under the Securities Act of 1933, as amended (the "Act"), relating to (i) the Company's unsecured debt securities (the "Debt Securities"), (ii) the Company's ordinary shares, par value $0.01 per share (the "Ordinary Shares"), (iii) the Company's preference shares, par value $0.10 per share (the "Preference Shares"), and (iv) warrants (the "Warrants") to purchase Debt Securities, Preference Shares, Ordinary Shares or other securities to be issued and sold by the Company from time to time pursuant to the Act for an aggregate initial offering price not to exceed $2,000,000,000 (the "Securities"), certain legal matters in connection with such Debt Securities are being passed upon for you by us. The Registration Statement, as amended, has been filed with, and declared effective by, the Securities and Exchange Commission. The Company's prospectus dated April 12, 2001 and prospectus supplement dated May 8, 2001 (collectively, the "Prospectus") have been filed with the Securities and Exchange Commission pursuant to Rule 425(b)(5) under the Securities Act of 1933, as amended. On May 8, 2001, the Company entered into an Underwriting Agreement (the "Underwriting Agreement") providing for the issuance and sale by the Company to Credit Suisse First Boston Corporation of $400,000,000 aggregate principal amount of the Company's 1.5% Convertible Debentures due May 15, 2021 (the "Debentures"). In our capacity as your counsel in the connection referred to above, we have examined (i) the Articles of Association and Memorandum of Association of the Company (the "Charter Documents"); (ii) the Indenture dated as of April 15, 1997, as supplemented by the First Supplemental Indenture dated as of April 15, 1997, the Second Supplemental Indenture dated as of May 14, 1999 and the Third Supplemental Indenture dated as of May 24, 2000 (the "Senior Indenture"), between the Company or a predecessor thereto and Chase Bank of Texas, National Association (now known as The Chase Manhattan Bank), as trustee (the "Trustee"), pursuant to which the senior Debt Securities may be issued; (iii) the draft Fourth Supplemental Indenture (the "Supplemental Indenture") to be executed by the Company and the Trustee, pursuant to which the Debentures will be issued by the Company; (iv) the Underwriting Agreement; (v) the Prospectus and (vi) the originals, or copies certified or otherwise identified, of corporate records

2 BAKER BOTTS L.L.P. 2 May 10, 2001 of the Company, certificates of public officials and of representatives of the Company, statutes and other instruments and documents as a basis for the opinions hereafter expressed. In making our examination, we have assumed the due execution and delivery of the Supplemental Indenture, and we have assumed that all signatures on documents examined by us are genuine, all documents submitted to us as originals are authentic and all documents submitted to us as certified or photostatic copies conformed with the originals of such documents. In connection with this opinion, we have assumed that the Debentures will be issued and sold in compliance with applicable federal and state securities laws and in the manner stated in the Registration Statement and the Prospectus. Based upon and subject to the foregoing, we are of the opinion that: 1. The Debentures will, when they have been duly executed, authenticated, issued and delivered in accordance with the provisions of both the Indenture and the Supplemental Indenture and the provisions of the Underwriting Agreement, constitute legal, valid and binding obligations of the Company, enforceable against the Company in accordance with their terms, except as the enforceability thereof is subject to the effect of (A) any applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance or other law relating to or affecting creditors' rights generally and (B) general principles of equity and public policy (regardless of whether such enforceability is considered in a proceeding in equity or at law). This opinion is limited to the laws of the State of New York and the applicable federal laws of the United States. We hereby consent to the filing of this opinion of counsel as Exhibit 5.1 to the Current Report on Form 8-K. We also consent to the reference to our Firm under the headings "Legal Opinions" and "Legal Matters" in the prospectus forming a part of the Registration Statement. In giving this consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Act and the rules and regulations of the Commission thereunder. Very truly yours, /s/ BAKER BOTTS L.L.P. JDG/JHM

1 WALKERS ATTORNEYS-AT-LAW Walker House P.O. Box 265GT Mary Street George Town Cayman Islands Tel: (345) 949-0100 Fax: (345) 949-7886 TRANSOCEAN SEDCO FOREX INC. (A CAYMAN ISLANDS EXEMPTED COMPANY) 4 GREENWAY PLAZA HOUSTON, TEXAS 77046 UNITED STATES OF AMERICA May 10, 2001 Gentlemen VALIDITY OF ISSUE OF ORDINARY SHARES, PREFERENCE SHARES AND WARRANTS OF TRANSOCEAN SEDCO FOREX INC., A CAYMAN ISLANDS EXEMPTED COMPANY. As set forth in a Registration Statement on Form S-3 (the REGISTRATION STATEMENT) to be filed with the Securities and Exchange Commission (the COMMISSION) by Transocean Sedco Forex Inc., a Cayman Islands exempted company (the COMPANY), under the Securities Act of 1933, as amended (the ACT), relating to (i) the Company's unsecured debt securities (the DEBT SECURITIES), (ii) the Company's ordinary shares, par value $0.01 per share (the ORDINARY SHARES), (iii) the Company's preference shares, par value $0.10 per share (the PREFERENCE SHARES), and (iv) warrants (the WARRANTS) to purchase Debt Securities, Preference Shares, Ordinary Shares or other securities to be issued and sold by the Company from time to time pursuant to the Act for an aggregate initial offering price not to exceed $2,000,000,000 (the SECURITIES), certain legal matters in connection with such Ordinary Shares, Preference Shares and Warrants are being passed upon for you by us. The Registration Statement, as amended, has been filed with, and declared effective by, the Securities and Exchange Commission. The Company's prospectus dated April 12, 2001 and prospectus supplement dated May 8, 2001 (collectively, the "Prospectus") have been filed with the Securities and Exchange Commission pursuant to Rule 425(b)(5) under the Securities Act of 1933, as amended. On May 8, 2001, the Company entered into an Underwriting Agreement (the "Underwriting Agreement") providing for the issuance and sale by the Company to Credit Suisse First Boston Corporation of $400,000,000 aggregate principal amount of the Company's 1.5% Convertible Debentures due May 15, 2021 (the "Debentures"). In connection with this opinion, we have assumed that (i) the Registration Statement and any amendments to the Registration Statement (including post-effective amendments) have become effective under the Act; (ii) a prospectus supplement and any amendments to the Registration Statement (including post-effective amendments) have been prepared and filed with the Commission describing the Securities offered thereby; (iii) all Securities will be issued and sold in compliance with applicable federal and state securities laws and in the manner stated in the Registration Statement and the appropriate prospectus supplement; (iv) the Underwriting -1-

2 Agreement has been validly executed and delivered by the Company and the other parties thereto insofar as such matters are governed by New York law; and (v) the Supplemental Indenture (as defined in Schedule 1 hereto) has been validly executed and delivered by the Company and the other parties thereto insofar as such matters are governed by New York law. For the purposes of giving this opinion, we have examined the documents listed in Schedule 1. In giving this opinion we have relied upon the assumptions set out in Schedule 2 hereto, which we have not independently verified. We are Attorneys-at-Law in the Cayman Islands and express no opinion as to any laws other than the laws of the Cayman Islands in force and as interpreted at the date hereof. Based upon the foregoing examinations and assumptions and upon such searches as we have conducted and having regard to legal considerations which we deem relevant, we are of the opinion that under the laws of the Cayman Islands: 1. The Company is an exempted company duly registered and validly existing and, based on the certificate issued by the Cayman Islands Registrar of Companies, in good standing under the laws of the Cayman Islands. 2. With respect to Ordinary Shares, when certificates representing the Ordinary Shares have been duly executed, countersigned, registered and delivered, or if uncertificated, valid book-entry notations are made in the share register of the Company, the Ordinary Shares issuable upon conversion or repurchase of the Debentures, when issued upon such conversion or repurchase, will be recognized as having been duly authorized and validly issued, fully paid and non-assessable. This opinion is limited to the matters referred to herein and shall not be construed as extending to any other matter or document not referred to herein. This opinion is governed by and shall be construed in accordance with the laws of the Cayman Islands. We hereby consent to the filing of this opinion as an exhibit to the Current Report on Form 8-K of the Company. We also consent to the reference to our Firm under the headings "Legal Opinions" and "Legal Matters" in the prospectus forming a part of the Registration Statement. In giving this consent we do not admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act of 1933, as amended, or the rules and regulations of the SEC thereunder. Yours faithfully, /s/ WALKERS WALKERS -2-

3 SCHEDULE 1 LIST OF DOCUMENTS EXAMINED 1. The memorandum of association and articles of association of the Company. 2. A certificate of good standing in respect of the Company issued by the Cayman Islands Registrar of Companies dated 27 February 2001. 3. The resolutions adopted by the Board of Directors of the Company on September 14, 2000 and February 8, 2001 (the RESOLUTIONS). 4. The contents of the Registration Statement on Form S-3 to be filed with the Securities and Exchange Commission by the Company. 5. The Indenture dated as of April 15, 1997, as supplemented by the First Supplemental Indenture dated as of April 15, 1997, the Second Supplemental Indenture dated as of May 14, 1999 and the Third Supplemental Indenture dated as of May 24, 2000 (the "Senior Indenture"), between the Company or a predecessor thereto and Chase Bank of Texas, National Association (now known as The Chase Manhattan Bank), as trustee (the "Trustee"), pursuant to which the senior Debt Securities may be issued. 6. The draft Fourth Supplemental Indenture (the "Supplemental Indenture") to be executed by the Company and the Trustee, pursuant to which the Debentures will be issued by the Company. 7. The Underwriting Agreement. 8. The Prospectus. 9. Such other documents as we have considered necessary for the purposes of rendering this opinion. -3-

4 SCHEDULE 2 ASSUMPTIONS The opinions hereinbefore given are based upon the following assumptions insofar as each such assumption may relate to the opinions given: 1. All original documents are authentic, that all signatures and seals are genuine, that all documents purporting to be sealed have been so sealed and that all copies conform to their originals. 2. The Minute Book of the Company supplied to us by the Company contains a complete record of the business transacted by it. 3. The corporate records of the Company supplied to us by the Company constitute its complete corporate records and that all matters required by law to be recorded therein are so recorded. 4. From the date of the Resolutions no corporate or other action is taken by the Company to amend, alter or repeal the Resolutions and no corporate or other action is taken by the Company except as contemplated by the Registration Statement. -4-