AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT AMONG HORIZON OFFSHORE, INC. AND THE INITIAL HOLDERS LISTED ON THE SIGNATURE PAGES HEREOF Dated as of December 19, 2005

Exhibit 10.4

AMENDED AND RESTATED
REGISTRATION RIGHTS AGREEMENT

AMONG

HORIZON OFFSHORE, INC.

AND

THE INITIAL HOLDERS LISTED ON
THE SIGNATURE PAGES HEREOF

Dated as of December 19, 2005

TABLE OF CONTENTS


		Page
SECTION 1.	Definitions		1

SECTION 2.	Registration of Securities by the Company		5

SECTION 3.	Registration Expenses		13

SECTION 4.	Conditions to Registration		15

SECTION 5.	Indemnification		15

SECTION 6.	Exchange Act Registration; Rule 144 Reporting		18

SECTION 7.	Limitation on Registration Rights of Others		19

SECTION 8.	Mergers, etc.		20

SECTION 9.	Notices, etc.		20

SECTION 10.	Entire Agreement		21

SECTION 11.	Amendments; Waivers and Further Agreements		21

SECTION 12.	Assignment; Successors and Assigns		22

SECTION 13.	Severability		22

SECTION 14.	Counterparts		22

SECTION 15.	Gender; Usage		22

SECTION 16.	Governing Law		22

SECTION 17.	Survival		22

SECTION 18.	Expenses		23

SECTION 19.	Specific Performance		23

REGISTRATION RIGHTS AGREEMENT

THIS AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made and effective as of December 19, 2005, by and among HORIZON OFFSHORE, INC., a Delaware corporation (the “Company”), and the initial holders listed on the signature pages hereof (collectively, the “Initial Holders”).

W I T N E S S E T H:

RECITALS.

A. On March 31, 2005, the Company and the Initial Holders entered that certain recapitalization letter agreement (the “Recap Letter Agreement”) pursuant to which the Company agreed to issue to the Holders 60 million shares of Common Stock and one million shares of Series B Preferred Stock in exchange for $84,972,823 aggregate principal amount of the Company’s 16% and 18% Subordinated Secured Notes due March 31, 2007 and all of the outstanding shares of the Company’s Series A Redeemable Participating Preferred Stock, par value $1.00 per share, and other additional consideration as provided in the Recap Letter Agreement (the “Exchange Transaction”);

B. As a condition precedent to the consummation of the Exchange Transaction, the Company and the Initial Holders have entered into that certain Registration Rights Agreement (the “Initial Agreement”), dated April 30, 2005, and effective as of the date of the date of the consummation of the Exchange Transaction (the “Effective Date”);

C. The Company has agreed to exchange up to $13.2 million aggregate principal amount of its outstanding 8% Subordinated Secured Notes due March 31, 2010 (“Subordinated Notes”) for Subordinated Convertible Notes due March 31, 2010 (“Subordinated Convertible Notes”) and Common Stock;

D. Concurrently, the Company is selling shares of its Common Stock as described herein in a private placement with proceeds to the Company of approximately $20 million (the “Private Placement”).

E. In order to induce the holders of the Subordinated Notes to exchange their Subordinated Notes for Subordinated Convertible Notes, the Company desires to amend and restate the Initial Agreement to provide for the registration of the Subordinated Note Conversion Shares (as defined below) issuable upon conversion of the Subordinated Convertible Notes.

NOW, THEREFORE, in consideration of the recitals, and the mutual covenants hereinafter set forth, the parties, intending to be legally bound, hereby agree as follows:

SECTION 1. Definitions.

(a) Defined Terms. The following terms (whether or not underscored) when used in this Agreement, including its preamble and recitals, shall, except where the context

otherwise requires, have the following meanings (such meanings to be equally applicable to the singular and plural forms thereof):

“Agreement” means this Registration Rights Agreement as in effect on the date hereof and as hereafter amended, supplemented, restated or otherwise modified.

“Available Securities” is defined in Section 2(b).

“Business Day” means any day which is neither a Saturday, a Sunday nor a legal holiday on which banks are authorized or required to be closed in New York, New York.

“Common Stock” means the Common Stock, par value $.00001 per share, of the Company.

“Company” is defined in the preamble to this Agreement.

“Conversion Share Registration Period” is defined in Section 2(a).

“Conversion Share Shelf Registration” is defined in Section 2(a).

“Conversion Shares” means the shares of Common Stock or any other securities which a Holder may acquire upon conversion of Series B Preferred Shares, together with any other securities which a Holder may acquire on account of any Conversion Shares whether upon the making or paying of any dividend or other distribution on Conversion Shares, upon any split up of Conversion Shares, upon a recapitalization, merger, consolidation, share exchange, reorganization or other transaction or series of related transactions in which Conversion Shares are changed into or exchanged for securities of another corporation, upon exercise of any preemptive right (or the exercise or conversion of any security which such Holder may acquire in connection with the exercise of any preemptive right) with respect to any Conversion Shares or otherwise.

“Effective Date” is defined in the Recitals.

“Exchange Act” means the Securities Exchange Act of 1934, as amended from time to time.

“Exchange Transaction” is defined in the Recitals.

“Holders” means, collectively, the registered holders (including, initially, the Initial Holders), from time to time, of Securities. Whenever the phrase “Holder of Registrable Securities” or any similar phrase is used herein, it shall also include any holders of the Series B Preferred Shares and the Subordinated Convertible Notes.

“Indemnified Person” is defined in Section 5(a).

“Indemnifying Person” is defined in Section 5(c).

“Initial Agreement” is defined in the Recitals.

“Initial Holders” is defined in the preamble to this Agreement.

“Initial Registration Period” is defined in Section 2(a).

“Initial Request” is defined in Section 2(a).

“Initial Requesting Holders” is defined in Section 2(a).

“Initial Shares” means the 60,000,000 shares of Common Stock issued to the Initial Holders in the Exchange Transaction, together with any other securities which a Holder may acquire on account of any Initial Shares whether upon the making or paying of any dividend or other distribution on Initial Shares, upon any split up of Initial Shares, upon a recapitalization, merger, consolidation, share exchange, reorganization or other transaction or series of related transactions in which Initial Shares are changed into or exchanged for securities of another corporation, upon exercise of any preemptive right (or the exercise or conversion of any security which such Holder may acquire in connection with the exercise of any preemptive right) with respect to any Initial Shares or otherwise.

“Initial Shelf Registration” is defined in Section 2(a).

“NASD” means the National Association of Securities Dealers, Inc.

“Person” means any natural person, corporation, partnership, limited liability company, firm, association, government, governmental agency or any other entity, whether acting in an individual, fiduciary or other capacity.

“Private Placement Shares” shall mean the shares of Common Stock sold in the Private Placement.

“Prospectus” means each prospectus included as part of any Registration Statement, as amended or supplemented, including each preliminary prospectus and all material incorporated by reference in such prospectus.

“Recap Letter Agreement” is defined in the Recitals.

“Registrable Securities” means the Shares, but excluding (i) Shares that have been disposed of under a Registration Statement or any other effective registration statement, including in a transaction contemplated by Section 8, and (ii) Shares sold pursuant to Rule 144 under the Securities Act. A Person is deemed to be a holder of Registrable Securities whenever such Person owns Registrable Securities or has the right to acquire such Registrable Securities whether or not such acquisition has actually been effected and disregarding any legal or contractual restrictions upon the exercise of such right.

“Registration Expenses” is defined in Section 3(c).

“Registration Period” means the Conversion Share Registration Period or the Initial Registration Period.

“Registration Request” is defined in Section 2(b).

“Registration Statement” means any registration statement of the Company which covers Registrable Securities pursuant to Section 2 of this Agreement, including the Prospectus, amendments (including post-effective amendments) and supplements to such registration statement and Prospectus and all exhibits and all material incorporated by reference in such registration statement.

“Required Holders” means the Holders of Registrable Securities representing (or Series B Preferred Shares and Subordinated Convertible Notes which when fully converted would represent) at least two-thirds of the voting power of all Shares (assuming all Series B Preferred Shares and Subordinated Convertible Notes had been fully converted into Conversion Shares and Subordinated Note Conversion Shares, respectively).

“SEC” means the United States Securities and Exchange Commission.

“Secondary Request” is defined in Section 2(a).

“Securities” means, collectively, the Series B Preferred Shares, the Subordinated Convertible Notes, and the Registrable Securities.

“Securities Act” means the Securities Act of 1933, as amended from time to time.

“Series B Preferred Shares” means the 1,000,000 shares of Series B Preferred Stock issued to the Initial Holders in the Exchange Transaction, together with any other securities which a Holder may acquire on account of any Series B Preferred Shares whether upon the making or paying of any dividend or other distribution on Series B Preferred Shares, upon any split up of Series B Preferred Shares, upon a recapitalization, merger, consolidation, share exchange, reorganization or other transaction or series of related transactions in which Series B Preferred Shares are changed into or exchanged for securities of another corporation, upon exercise of any preemptive right (or the exercise or conversion of any security which such Holder may acquire in connection with the exercise of any preemptive right) with respect to any Series B Preferred Shares or otherwise.

“Series B Preferred Stock” means the Series B Mandatorily Convertible Redeemable Preferred Stock, par value $1.00 per share, of the Company.

“Shares” means the Initial Shares, the Conversion Shares, the Private Placement Shares and the Subordinated Note Conversion Shares.

“Shelf Registration” is defined in Section 2(a).

“Specified Registrable Securities” is defined in Section 2(a).

“Stock” means any capital stock of the Company.

“Subordinated Convertible Notes” is defined in the Recitals.

“Subordinated Note Conversion Shares” means the shares of Common Stock or any other securities which a Holder may acquire upon exchange of Subordinated Notes or conversion of Subordinated Convertible Notes, together with any other securities which a Holder may acquire on account of any Subordinated Note Conversion Shares whether upon the making or paying of any dividend or other distribution on Subordinated Note Conversion Shares, upon any split up of Subordinated Note Conversion Shares, upon a recapitalization, merger, consolidation, share exchange, reorganization or other transaction or series of related transactions in which Subordinated Note Conversion Shares are changed into or exchanged for securities of another corporation, upon exercise of any preemptive right (or the exercise or conversion of any security which such Holder may acquire in connection with the exercise of any preemptive right) with respect to any Subordinated Note Conversion Shares or otherwise.

“Subordinated Notes” is defined in the Recitals.

“Subsequent Registration Period” is defined in Section 2(c)(iv).

“Subsequent Shelf Registration” is defined in Section 2(c)(iv).

(b) Cross-References; Headings. Unless otherwise specified, references in this Agreement to any Article or Section are references to such Article or Section of this Agreement, and unless otherwise specified, references in any Article, Section or definition to any clause are references to such clause of such Section, Article or definition. The headings contained in this Agreement are for reference purposes only and shall not in any way affect the meaning or interpretation of this Agreement. The term “or” shall have the inclusive meaning of the term “and/or.”

SECTION 2. Registration of Securities by the Company.

(a) Shelf Registration. As expeditiously as practicable after the Effective Date, but in no event later than 60 days thereafter, the Company will file a “shelf” registration statement on Form S-1 or S-3 (or on any other form for general registration of securities) unless the use of a different form has been agreed upon in writing by the Company and the Required Holders for an offering to be made on a continuous basis pursuant to Rule 415 under the Securities Act (or any similar rule that may be adopted by the SEC) covering the Registrable Securities that are Initial Shares (the “Initial Shelf Registration”).

The Company shall use its best efforts to have the Initial Shelf Registration declared effective no later than 120 days after the Initial Shelf Registration is filed with the SEC and to keep the Initial Shelf Registration continuously effective until such date that all Initial Shares have been sold pursuant to the Initial Shelf Registration (such period hereinafter referred to as the “Initial Registration Period”).

As expeditiously as practicable after the conversion of the Series B Preferred Stock into the Conversion Shares, but in no event later than 30 days thereafter, the Company will file a “shelf” registration statement on Form S-1 or S-3 (or on any other form for the general registration of securities) unless the use of a different form has been agreed upon in writing by the Company and the Required Holders for an offering to be made on a continuous basis pursuant to Rule 415 under the Securities Act (or any similar rule that may be adopted by the

SEC) covering all Registrable Securities that are Conversion Shares, Subordinated Note Conversion Shares and Private Placement Shares (a “Conversion Share Shelf Registration” and the Conversion Share Shelf Registration and the Initial Shelf Registration are hereinafter referred to as a “Shelf Registration”). The Company shall use its best efforts to have the Conversion Share Shelf Registration declared effective no later than 120 days after such Conversion Share Shelf Registration is filed with the SEC and to keep it continuously effective until such date that all Conversion Shares, Subordinated Note Conversion Shares and Private Placement Shares have been sold pursuant to the Conversion Share Shelf Registration (such period hereinafter referred to as a “Conversion Share Registration Period”). The Company shall not include or permit any other party to include any securities other than Registrable Securities in any Shelf Registration without the written consent of the Required Holders.

If any Registrable Securities are to be sold in a firm commitment underwritten offering and if the managing underwriter or underwriters shall advise the Company and the holders of such Registrable Securities in writing that in their opinion the amount of Registrable Securities requested to be included in such registration exceeds the amount of securities which can be included in such offering without materially adversely affecting the success of such offering, there shall be included in such firm commitment underwritten offering the amount of Registrable Securities which in the opinion of such underwriter or underwriters can be sold, and such Registrable Securities shall be allocated pro rata among the holders of such Registrable Securities on the basis of the amount of Registrable Securities requested to be included in such registration statement by such holders and the amount of Registrable Securities which in the opinion of such underwriter or underwriters can be sold. If any Registrable Securities covered by a Shelf Registration are to be sold in an underwritten offering, the investment banker or investment bankers and manager or managers that will administer the offering will be selected by the Company and shall be reasonably acceptable to holders of a majority of such Registrable Securities included in such offering.

The Company agrees to supplement or make amendments to each Shelf Registration, if required by the registration form utilized by the Company for such Shelf Registration or by the instructions applicable to such registration form or by the Securities Act or the rules and regulations thereunder or if reasonably requested by the holders of (or any underwriter for) a majority in aggregate amount of Registrable Securities to which such Shelf Registration relates, and the Company agrees to furnish to such holders copies of any such supplement or amendment prior to its being used or filed with the SEC.

If the Company has filed a “shelf” Registration Statement on Form S-1 (or on any other form for the general registration of securities) pursuant to this Section 2(a) because Form S-3 was not available for use by the Company at the time of such filing, the Company shall undertake to cause the Registration Statement for the Shelf Registration to be on Form S-3 as soon as such form is available for use by the Company to register the Registrable Securities for an offering to be made on a continuous basis pursuant to Rule 415 under the Securities Act (including by filing a post-effective amendment on Form S-3 to the then existing Shelf Registration), and, to the extent the Company seeks to cause the Registration Statement for the Shelf Registration to be on Form S-3 by filing a new Shelf Registration, the Company shall maintain the effectiveness of the Shelf Registration then in effect until such time as such Shelf Registration on Form S-3 has been declared effective by the SEC.

(b) Piggyback Registration. If at any time or from time to time the Company shall propose to file on its behalf or on behalf of any of its security holders a registration statement under the Securities Act on Form S-1 or S-3 (or on any other form for the general registration of securities) with respect to any shares of Common Stock (other than pursuant to Section 2(a)), the Company shall in each case:

(i) promptly give written notice to each Holder at least thirty (30) days before the anticipated filing date, indicating the proposed offering price and describing the plan of distribution;

(ii) include in such registration (and any related qualification under blue sky or other state securities laws or other compliance) and, at the request of any Holder, in any underwriting involved therein, all the Registrable Securities specified by any Holder or Holders of Registrable Securities (the “Specified Registrable Securities”) in a written request (the “Registration Request”) delivered to the Company within twenty (20) days after receipt of such written notice from the Company; and

(iii) if such offering is proposed to be underwritten, use its best efforts to cause the managing underwriter(s) of such proposed underwritten offering to permit the Specified Registrable Securities to be included in the Registration Statement for such offering on the same terms and conditions as any similar securities of the Company included therein.

Notwithstanding the foregoing, if the managing underwriter(s) of such an underwritten offering advise(s) the Holders of Specified Registrable Securities in writing that marketing considerations require a limitation on the securities, other than the securities the Company intends to sell, to be included in any Registration Statement filed under this Section 2(b) to a certain number of shares (the “Available Securities”), then the Company shall in such case be obligated to such Holders only with respect to such number of Available Securities. The limitation on the number of Specified Registrable Securities will be imposed pro rata (based upon the ratio of the number of shares of Specified Registrable Securities which the managing underwriter(s) propose(s) to include at the anticipated offering price to the number of Specified Registrable Securities requested to be included in such registration by each Holder) among all Holders of Specified Registrable Securities.

Each Registration Request shall set forth the number or amount of Specified Registrable Securities. Except as provided by Section 2(a), notwithstanding any other provision of this Agreement to the contrary, neither the delivery of any notice by the Company pursuant to this Section 2(b)(i) nor of any Registration Request by any Holder pursuant to this Section 2(b)(ii) shall in any way obligate the Company to file a Registration Statement and, notwithstanding such filing, the Company may, at any time prior to the effective date thereof, in its sole discretion, determine not to offer the securities to which the Registration Statement relates without liability to any of the Holders. No registration of Registrable Securities effected under this Section 2(b) shall relieve the Company of its obligation to effect the registration of Registrable Securities pursuant to Section 2(a).

(c) Registration Procedures. If and when the Company shall be required by the provisions of this Section 2 to effect the registration of Registrable Securities under the Securities Act, the Company will use its best efforts to effect such registration to permit the sale of such Registrable Securities in accordance with the intended method or methods of disposition thereof and in accordance with Section 2(a) or 2(b), as applicable, and pursuant thereto the Company will, as expeditiously as possible:

(i) before filing with the SEC a Registration Statement or Prospectus or any amendments or supplements thereto, furnish to the Holders of the Registrable Securities covered by such Registration Statement and the underwriter(s), if any, copies of all such documents proposed to be filed, which documents will be made available, on a timely basis, for review by such Holders and underwriters;

(ii) prepare and, as expeditiously as possible but in any event within the applicable periods specified in Section 2(a), file with the SEC a Registration Statement and Prospectus covering such Registrable Securities; prepare and file such amendments and post-effective amendments to any Registration Statement, and such supplements to the Prospectus, as may be reasonably requested by any Holder of Registrable Securities or the managing underwriter(s), if any, or as may be required by the Securities Act, the Exchange Act or by the rules, regulations or instructions applicable to the registration form utilized by the Company or as may otherwise be necessary to cause such Registration Statement to become effective or to keep such Registration Statement effective until such time as all of the Registrable Securities covered by such Registration Statement have been disposed of in accordance with the intended method or methods of disposition set forth in such Registration Statement or Prospectus; and cause the Prospectus as so supplemented to be filed pursuant to Rule 424 (or any successor rule) under the Securities Act; and comply with the provisions of the Securities Act with respect to the disposition of all securities covered by such Registration Statement during the applicable period in accordance with the intended method or methods of disposition by the Holders thereof set forth in such Registration Statement or Prospectus;

(iii) promptly notify the selling Holders of Registrable Securities and the managing underwriter(s), if any, and if requested by any such Person, confirm such advice in writing:

(a) of the filing of the Prospectus or any supplement to the Prospectus and of the effectiveness of any Registration Statement and/or any post-effective amendment,

(b) of any request by the SEC for amendments or supplements to such Registration Statement or the Prospectus or for additional information,

(c) of the issuance by the SEC of any stop order suspending the effectiveness of such Registration Statement or the initiation of any proceedings for that purpose,

(d) of the Company’s becoming aware at any time that the representations and warranties of the Company contemplated by Section 2(c)(xiv)(a) have ceased to be true and correct,

(e) of the receipt by the Company of any notification with respect to the suspension of the qualification of the Registrable Securities for sale in any jurisdiction or the initiation or threat of any proceeding for such purpose, and

(f) of the existence of any fact which, to the knowledge of the Company, results in the Registration Statement, the Prospectus or any document incorporated therein by reference containing an untrue statement of material fact or omitting to state a material fact required to be stated therein or necessary to make the statements therein not misleading,

(iv) make every reasonable effort to obtain the withdrawal of any order suspending the effectiveness of any Registration Statement, and if such withdrawal is not obtained within 30 days of the suspension of the effectiveness of such Registration Statement, the Company shall (A) as expeditiously as practicable cause to be filed an additional “shelf” registration statement pursuant to Rule 415 under the Securities Act (and/or any similar rule that may be adopted by the SEC) with respect to the Registrable Securities registered under such Registration Statement (the “Subsequent Shelf Registration”), and (B) use its best efforts to have the Subsequent Shelf Registration declared effective as soon as practicable after such filing and to keep the Subsequent Shelf Registration continuously effective until such date that all Registrable Securities registered thereunder have been sold pursuant to the Subsequent Shelf Registration (as used herein the term “Registration Statement” and “Shelf Registration” includes any Subsequent Shelf Registrations);

(v) make every reasonable effort to obtain any qualification referred to in Section 2(c)(iii)(e) at the earliest possible moment;

(vi) if reasonably requested by the managing underwriter(s) or the Required Holders of the Registrable Securities being sold in connection with an underwritten offering, immediately incorporate in a supplement to the Prospectus or post-effective amendment to the Registration Statement such information as the managing underwriter(s) or the Required Holders of the Registrable Securities being sold reasonably request to have included therein relating to the plan of distribution with respect to such Registrable Securities, including, without limitation, information with respect to the amount of Registrable Securities being sold to such underwriters, the purchase price being paid therefor by such underwriters and any other terms of the underwritten offering of the Registrable Securities to be sold in such offering; and make all required filings of such supplement to the Prospectus or post effective amendment to the Registration Statement as soon as notified of the matters to be incorporated in such supplement to the Prospectus or post-effective amendment to the Registration Statement;

(vii) at the request of any selling Holder of Registrable Securities, furnish to such selling Holder of Registrable Securities and the managing underwriter(s), if any, without charge, at least one signed copy of the Registration Statement and any post-effective amendment thereto, including financial statements and schedules, all documents incorporated therein by reference and all exhibits thereto (including those incorporated by reference);

(viii) deliver to each selling Holder of Registrable Securities and the managing underwriter(s), if any, without charge, as many copies of the Registration Statement, each Prospectus (including each preliminary prospectus) and any amendment or supplement thereto (in each case including all exhibits), as such Persons may reasonably request, together with all documents incorporated by reference in such Registration Statement or Prospectus, and such other documents as such selling Holder may reasonably request in order to facilitate the disposition of its Registrable Securities covered by such Registration Statement; the Company consents to the use of each Prospectus and any supplement thereto by each of the selling Holders of Registrable Securities and the managing underwriter(s), if any, in connection with the offering and sale of the Registrable Securities covered by each Prospectus or any amendment or supplement thereto;

(ix) prior to any public offering of Registrable Securities, register or qualify or reasonably cooperate with the selling Holders of Registrable Securities, the managing underwriter(s), if any, and their respective counsel in connection with the registration or qualification of such Registrable Securities for offer and sale under the securities or blue sky laws of such jurisdictions as any selling Holder or managing underwriter(s) reasonably request(s), to keep such registration or qualification in effect for so long as such registration remains in effect, and do any and all other acts or things necessary or advisable to enable the disposition in such jurisdictions of the Registrable Securities covered by the Registration Statement, except that the Company shall not be required to register or qualify such Registrable Securities under such other securities or blue sky laws if it is required to (A) qualify generally to do business as a foreign corporation in any jurisdiction wherein it would not otherwise be required to qualify but for the requirements of this paragraph (viii), (B) subject itself to taxation in any such jurisdiction or (C) consent to general service of process in any such jurisdiction;

(x) cooperate with the selling Holders of Registrable Securities and the managing underwriter(s), if any, to facilitate the timely preparation and delivery of certificates representing Registrable Securities to be sold and not bearing any legends restricting the transfer thereof; and enable such Registrable Securities to be in such denominations and registered in such names as the managing underwriters may request at least two Business Days prior to any sale of Registrable Securities to the underwriters;

(xi) use its best efforts to cause the Registrable Securities covered by the applicable Registration Statement to be registered with or approved by such United States, state and local governmental agencies or authorities as may be necessary to enable the seller or sellers thereof or the underwriters, if any, to consummate the disposition of such Registrable Securities;

(xii) if any fact contemplated by Section 2(c)(iii)(b) or Section 2(c)(iii)(f) above shall exist, promptly notify each Holder on whose behalf Registrable Securities have been registered and promptly prepare and furnish to such Holders a supplement or post-effective amendment to the Registration Statement or the related Prospectus or any document incorporated therein by reference and promptly file any other required document so that, as thereafter delivered to the purchasers of the Registrable Securities, neither the Registration Statement nor the Prospectus will contain an untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading; provided; however, that if the Company shall furnish to the Requesting Holders a certificate signed by the Company’s Chairman of the Board stating that in his good faith judgment such actions would be detrimental or otherwise disadvantageous to the Company or its stockholders, the Company may delay such actions for as short a period as reasonably necessary to remove such detrimental condition, not to exceed 30 days in any instance.

(xiii) cause all Registrable Securities covered by the Registration Statement to be (A) listed on each securities exchange on which securities of the same class are then listed or (B) admitted for trading in any inter-dealer quotation system on which securities of the same class are then traded;

(xiv) not later than the effective date of the applicable Registration Statement, provide a CUSIP number for all Registrable Securities covered by the Registration Statement and provide the applicable transfer agent with printed certificates for such Registrable Securities which are in a form eligible for deposit with The Depository Trust Company;

(xv) enter into customary agreements (including underwriting agreements) and take all other reasonable actions in order to expedite or facilitate the disposition of such Registrable Securities; and in such connection, except as otherwise provided:

(a) in an underwritten offering, make such representations and warranties to the Holders selling such Registrable Securities and the underwriters, in form, substance and scope as are customarily made by issuers to selling securityholders and underwriters in similar underwritten offerings;

(b) obtain opinions of counsel to the Company and updates thereof addressed to each selling Holder and the underwriters, if any, covering the matters customarily covered in opinions requested in similar underwritten offerings and such other matters as may be reasonably requested by such Holders and underwriters, which counsel and opinions shall be reasonably satisfactory (in form, scope and substance) to the managing underwriters, if any, and the Required Holders of the Registrable Securities being sold;

(c) in connection with any underwritten offering, obtain so called “cold comfort” letters and updates thereof from the Company’s independent certified public accountants addressed to the selling Holders of Registrable Securities and the underwriters, such letters to be in customary form and covering matters of the type customarily covered in “cold comfort” letters to underwriters in connection with similar underwritten offerings;

(d) if an underwriting agreement is entered into, cause the same to include indemnification and contribution provisions and procedures substantially similar to those set forth in Section 5, subject to revisions the underwriters shall reasonably request, with respect to all parties to be indemnified pursuant to said Section 5; and

(e) deliver such documents and certificates as may reasonably be requested by the Required Holders of the Registrable Securities being sold, or the managing underwriter(s), if any, to evidence compliance with this paragraph (xiv) and with any customary conditions contained in the underwriting agreement or other agreement entered into by the Company;

the foregoing to be done upon each closing under any underwriting or similar agreement as and to the extent required thereunder and from time to time as may reasonably be requested by any selling Holder of Registrable Securities in connection with the disposition of Registrable Securities pursuant to such Registration Statement, all in a manner consistent with customary industry practice;

(xvi) upon execution and delivery of such confidentiality agreements as the Company may reasonably request, make available to the Holders of the Registrable Securities being sold, any underwriter participating in any disposition pursuant to such Registration Statement, and any attorney or accountant retained by such Holders or underwriter, all financial and other records, pertinent corporate documents and properties of the Company, and cause the Company’s officers, directors and employees to supply all information reasonably requested by any such Holder, underwriter, attorney or accountant in connection with the registration, at such time or times as the Person requesting such information shall reasonably determine;

(xvii) otherwise use its best efforts to comply with the Securities Act, the Exchange Act, all applicable rules and regulations of the SEC and all applicable state blue sky and other securities laws, rules and regulations, and make generally available to its security holders an earnings statement satisfying the provisions of Section 11(a) of the Securities Act, as soon as practicable, but in no event later than thirty (30) days after the end of the 12 calendar month period commencing after the effective date of the Registration Statement;

(xviii) cooperate and assist in any filings required to be made with the NASD and in the performance of any due diligence investigation by any underwriter; and

(xix) prior to the filing of any document which is being prepared for incorporation by reference into the Registration Statement or the Prospectus (other than a Registration Statement or Prospectus relating to a “shelf” offering) , upon receipt of such confidentiality agreements as the Company may reasonably request, provide copies of such document to counsel to the selling Holders of Registrable Securities, and to the managing underwriter(s), if any, and make the Company’s representatives available for discussion of such document.

(d) Restrictions on Public Sale by Holder of Registrable Securities. If any of the Registrable Securities registered pursuant to a Shelf Registration are to be sold in a firm commitment underwritten offering, each holder of Registrable Securities whose Registrable Securities are covered by the Shelf Registration filed pursuant to Section 2(a) and who has been given the opportunity (subject to the fifth paragraph of Section 2(a)) to participate in such offering at least 10 Business Days in advance of the commencement of such offering agrees, if requested by the managing underwriter or underwriters in such underwritten offering, not to effect any public sale or distribution of any of the Company’s securities, including a sale pursuant to Rule 144 under the Securities Act (except as part of such offering) during the 10-day period prior to, and during the 60-day period beginning on, the closing date of such offering made pursuant to such Shelf Registration, to the extent timely notified in writing by the Company or the managing underwriter or underwriters. In addition, if any registration of Common Stock to be sold on the behalf of the Company shall be in connection with an underwritten public offering and is subject to Section 2(b) (and the Company has complied with Section 2(b) in respect thereof) and such registration is approved by the Required Holders, any Holder of Registrable Securities representing more than 5% of the outstanding Common Stock shall (i) not effect any public sale or distribution of any of the Company’s securities, including a sale pursuant to Rule 144 under the Securities Act (except as part of such offering) during the 10-day period prior to, and during the 90-day period beginning on, the closing date of the sale of the Common Stock pursuant to an effective registration statement, to the extent timely notified in writing by the Company or the managing underwriter or underwriters of such underwritten public offering, and (ii) execute a “lock-up” letter with any of such underwriters agreeing to not effect any such public sale or distribution.

(e) Restrictions on Registration by the Company and Others. If any of the Registrable Securities registered pursuant to a Shelf Registration are to be sold in a firm commitment underwritten offering, during the 10-day period prior to, and during the 90-day period beginning on, the closing date of such offering, the Company will not effect any other registration of its Common Stock (or any securities convertible into or exchangeable or exercisable for its Common Stock), whether for its own account or that of any other security holder.

SECTION 3. Registration Expenses.

(a) All expenses incident to the Company’s performance of or compliance with its obligations under this Agreement (excluding underwriting discounts, selling commissions and brokerage fees, which will be paid by the selling Holders) will be paid by the Company, regardless of whether Registrable Securities are sold pursuant to any Registration Statement, including, without limitation:

(i) all registration, filing and listing fees;

(ii) fees and expenses of compliance with securities or blue sky laws (including, without limitation, the fees and disbursements of counsel for the underwriters, if any, or selling Holders in connection with blue sky and state securities qualifications of Registrable Securities and determination of their eligibility for investment under the laws of such jurisdictions as the managing underwriter(s), if any, or the Required Holders of the Registrable Securities covered by such Registration Statement may reasonably designate);

(iii) printing (including, without limitation, expenses of printing or engraving certificates for the Registrable Securities in a form eligible for deposit with The Depository Trust Company and of printing prospectuses), word processing, duplicating, messenger, telephone and delivery expenses;

(iv) fees and disbursements of counsel for the Company and, subject to Section 3(b), counsel for the selling Holders of the Registrable Securities;

(v) fees and disbursements of all independent certified public accountants of the Company or any other Persons for which financial statements are required or otherwise included in such Registration Statement (including, without limitation, the expenses of any special audit and, in connection with any underwritten offering, “cold comfort” letters required by or incident to such performance);

(vi) fees and expenses of other Persons (including special experts) retained by the Company; and

(vii) fees and expenses associated with any NASD filing required to be made in connection with any Registration Statement.

The Company will, in any event, pay its internal expenses (including, without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), the expense of any annual audit, the fees and expenses incurred in connection with the listing of the securities to be registered on each securities exchange on which securities of the same class are then listed or the admission for trading of the securities to be registered in each inter-dealer quotation system on which securities of the same class are then traded, and rating agency fees.

(b) In connection with each Registration Statement required hereunder, the Company will reimburse the Holders of Registrable Securities being registered pursuant to such Registration Statement for the reasonable fees and disbursements of not more than one counsel at any one time (or more than one counsel if a conflict exists among such Holders in the exercise of the reasonable judgment of counsel for such Holders and the Company) chosen by the Required Holders of the Registrable Securities being sold; the expense of any additional counsel for the Holders shall be paid by the Holders.

(c) The term “Registration Expenses” shall mean the expenses payable by the Company pursuant to the provisions of this Section 3.

SECTION 4. Conditions to Registration.

Each Holder’s right to have Registrable Securities included in any Registration Statement filed by the Company in accordance with the provisions of Section 2 shall be subject to the following conditions:

(a) The Holders on whose behalf such Registrable Securities are to be included shall be required to furnish the Company in a timely manner with all information and undertakings required by the applicable rules and regulations of the SEC or applicable state blue sky and other securities laws, rules or regulations concerning the proposed method or methods of disposition of such securities, the identity of and compensation to be paid to any proposed underwriters to be employed in connection therewith, and such other information or undertakings as may be reasonably required by the Company properly to prepare and file such Registration Statement in accordance with applicable provisions of the Securities Act and to register and qualify such Registrable Securities for offer and sale under all applicable state blue sky and other securities laws, rules or regulations;

(b) If any such Holder desires to sell and distribute Registrable Securities over a period of time, or from time to time, at then prevailing market prices, then any such Holder shall execute and deliver to the Company such written undertakings as the Company and its counsel may reasonably require in order to assure full compliance with relevant provisions of the Securities Act and the Exchange Act and all applicable state blue sky and other securities laws, rules or regulations;

(c) In the case of any registration requested pursuant to the provisions of Section 2(b), the offering price for any Registrable Securities to be so registered shall be no less than for any securities of the same class then to be registered for sale for the account of the Company or other security holders, unless such Registrable Securities are to be offered from time to time based on the prevailing market price; and

(d) In the case of any underwritten offering on behalf of the Holders of Registrable Securities, such Holders will enter into such agreements (including underwriting agreements and lock-up agreements) as the managing underwriters shall reasonably request and as are customary in similar circumstances, provided, however, that no such agreements shall require any Holder to make any representations or warranties to, or agreements with, the Company or the underwriters other than representations, warranties or agreements regarding such Holder, the ownership of such Holder’s Registrable Securities and such Holder’s intended method of distribution.

SECTION 5. Indemnification.

(a) Indemnification by the Company. In the event of the registration of any Registrable Securities under the Securities Act pursuant to the provisions hereof, the Company will indemnify and hold harmless each seller of such Registrable Securities, its partners, directors, officers, employees and agents, each underwriter, broker and dealer, if any, who participates in the offering or sale of such securities, and each other Person, if any, who controls such seller or any such underwriter, broker or dealer within the meaning of either Section 15 of

the Securities Act or Section 20 of the Exchange Act (each such Person being hereinafter sometimes referred to as an “Indemnified Person,” provided, however, that for purposes of clauses (b), (c) and (d) of this Section 5, “Indemnified Person” shall also include the Company, its partners, directors, officers, employees and agents, and each other Person, if any, who controls the Company within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act) from and against any losses, claims, damages, liabilities or expenses, joint or several, to which such Indemnified Person may become subject under the Securities Act, the Exchange Act or otherwise, insofar as such losses, claims, damages, liabilities or expenses (or actions in respect thereof) arise out of or are based upon any untrue statement or alleged untrue statement of a material fact contained or incorporated by reference in any Registration Statement or Prospectus or any amendment or supplement thereto or any document incorporated by reference therein, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and will reimburse each such Indemnified Person for any legal or other expenses reasonably incurred by such Indemnified Person in connection with investigating or defending any such loss, claim, damage, liability, expense or action; provided, however, that the Company will not be liable in any such case to the extent that any such loss, claim, damage, liability, expense or action (i) arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made or incorporated by reference in the Registration Statement or Prospectus or any amendment or supplement thereto, in reliance upon and in conformity with written information furnished to the Company by such Indemnified Person specifically stating it is for use in preparation thereof or (ii) arises out of the use of any Prospectus by an Indemnified Party after the Company has provided such Indemnified Party with the notice and supplement referred to in Section 2(c)(xi) if such Prospectus is the subject of such notice. Such indemnity shall remain in full force and effect regardless of any investigation made by or on behalf of such Indemnified Person and shall survive the transfer of such Registrable Securities by such seller.

(b) Indemnification by Holders of Registrable Securities. In the event of the registration of any Registrable Securities under the Securities Act pursuant to the provisions hereof, each Holder on whose behalf such Registrable Securities shall have been registered will indemnify and hold harmless each and every Indemnified Person against any losses, claims, damages, liabilities or expenses, joint or several, to which such Indemnified Person may become subject under the Securities Act, the Exchange Act or otherwise, insofar as such losses, claims, damages, liabilities or expenses (or actions in respect thereof) arise out of or are based upon any untrue statement or alleged untrue statement of a material fact contained or incorporated by reference in any Registration Statement or Prospectus or any amendment or supplement thereto or any document incorporated by reference therein, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, which untrue statement or alleged untrue statement or omission or alleged omission has been made or incorporated therein in reliance upon and in conformity with written information furnished to the Company by such Holder specifically stating that it is for use in preparation thereof, and will reimburse each such Indemnified Person for any legal or other expenses reasonably incurred by such Indemnified Person in connection with investigating or defending any such loss, claim, damage, liability, expense or action; provided, however, that the liability of each Holder hereunder shall be limited

to the proceeds received by such Holder from the sale of Registrable Securities covered by such Registration Statement.

(c) Procedure. Promptly after receipt by an Indemnified Person of notice of the commencement of any action (including any governmental investigation or inquiry), such Indemnified Person will, if such Indemnified Person intends to make a claim in respect thereof against the party agreeing to indemnify such Indemnified Person pursuant to paragraph (a) or (b) hereof (each such Person being hereinafter referred to as an “Indemnifying Person”), give written notice to such Indemnifying Person of the commencement thereof, but the omission so to notify the Indemnifying Person shall not relieve the Indemnifying Person from any of its obligations pursuant to the provisions of this Section 5 except to the extent that the Indemnifying Person is actually prejudiced by such failure to give notice. In case any such action is brought against any Indemnified Person and it notifies an Indemnifying Person of the commencement thereof, the Indemnifying Person shall be entitled to participate in, and to the extent that it may wish, jointly with any other Indemnifying Person similarly notified, to assume the defense thereof, with counsel reasonably satisfactory to such Indemnified Person, and after notice from the Indemnifying Person to such Indemnified Person, the Indemnifying Person shall not, except as hereinafter provided, be responsible for any legal or other expenses subsequently incurred by such Indemnified Person in connection with the defense thereof. No Indemnifying Person will consent to entry of any judgment or enter into any settlement which does not include as an unconditional term thereof the giving by the claimant or plaintiff to such Indemnified Person of a release from all liability in respect of such claim or litigation.

Such Indemnified Person shall have the right to employ separate counsel in any such action and to participate in the defense thereof, but the fees and expenses of such counsel shall be the expense of such Indemnified Person unless (i) the Indemnifying Person has agreed to pay such fees and expenses or (ii) the Indemnifying Person shall have failed to assume the defense of such action or proceeding or has failed to employ counsel reasonably satisfactory to such Indemnified Person in any such action or proceeding or (iii) the named parties to any such action or proceeding (including any impleaded parties) include both such Indemnified Person and the Indemnifying Person and such Indemnified Person shall have been advised by counsel that representation of both parties by the same counsel would be inappropriate due to actual or potential material differing interests between them (in which case, if such Indemnified Person notifies the Indemnifying Person in writing that it elects to employ separate counsel at the expense of the Indemnifying Person, the Indemnifying Person shall not have the right to assume the defense of such action or proceeding on behalf of such Indemnified Person). The Indemnifying Person shall not be liable for any settlement of any such action or proceeding effected without its written consent, which consent shall not unreasonably be withheld, delayed or conditioned, but if settled with its written consent, or if there is a final judgment for the plaintiff in any such action or proceeding, the Indemnifying Person agrees to indemnify and hold harmless such Indemnified Persons from and against any loss or liability by reason of such settlement or judgment.

(d) Contribution. To the extent that the indemnification provided for in this Section 5 is unavailable to a party that would have been an Indemnified Person under this Section 5 in respect of any losses, claims, damages, liabilities or expenses (or actions in respect thereof) referred to herein, then each party that would have been an Indemnifying Person

thereunder shall, in lieu of indemnifying such Indemnified Person, contribute to the amount paid or payable by such Indemnified Person as a result of such losses, claims, damages, liabilities or expenses (or actions in respect thereof) in such proportion as is appropriate to reflect the relative fault of the Indemnifying Person on the one hand and the Indemnified Person on the other in connection with the statement or omission which resulted in such losses, claims, damages, liabilities or expenses (or actions in respect thereof), as well as any other relevant equitable considerations. 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 of a material fact relates to information supplied by the Indemnifying Person or the Indemnified Person and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The amount paid or payable by a party as a result of the losses, claims, damages, liabilities and expenses referred to above shall be deemed to include, subject to the limitations set forth in Section 5(c), any legal or other fees or expenses reasonably incurred by such party in connection with the investigation or defense of any action or claim. The Company and each Holder of Registrable Securities agrees that it would not be just and equitable if contribution pursuant to this Section 5 were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to in this Section 5. Notwithstanding the provisions of this Section 5(d), no Holder of Registrable Securities shall be required to contribute any amount in excess of the amount by which the total price at which the Registrable Securities sold by it exceeds the amount of any damages which such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission.

No Person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation.

Indemnification or, if appropriate, contribution, similar to that specified in the preceding provisions of this Section 5 (with appropriate modifications) shall be given by the Company and each seller of Registrable Securities with respect to any required registration or other qualification of such securities under any federal or state law or regulation or governmental authority other than the Securities Act.

In the event of any underwritten offering of Registrable Securities under the Securities Act pursuant to the provisions of Section 2, the Company and each Holder on whose behalf such Registrable Securities shall have been registered agree to enter into an underwriting agreement, in customary form, with the underwriters, which underwriting agreement may contain additional provisions with respect to indemnification and contribution in lieu thereof.

SECTION 6. Exchange Act Registration; Rule 144 Reporting.

The Company covenants and agrees that until such time as the Holders no longer hold any Registrable Securities it will:

(a) if required by law, maintain an effective registration statement (containing such information and documents as the SEC shall specify) with respect to the Common Stock of the Company under Section 12(g) of the Exchange Act;

(b) make and keep public information available, as those terms are understood and defined in Rule 144 under the Securities Act, even if the Company subsequently ceases to be subject to the reporting requirements of the Exchange Act;

(c) file with the SEC in a timely manner all reports and documents required of the Company under the Securities Act and the Exchange Act;

(d) furnish to any Holder promptly upon request (i) a written statement by the Company as to its compliance with the reporting requirements of Rule 144 (and any similar or successor rules) and of the Securities Act and the Exchange Act, (ii) a copy of the most recent annual or quarterly report of the Company and (iii) such other reports and documents of the Company and other information in the possession of or reasonably obtainable by the Company as such Holder may reasonably request in availing itself of any rule or regulation of the SEC allowing such Holder to sell any such securities without registration; and

(e) take such further action as any Holder of Registrable Securities may from time to time reasonably request to enable such Holder to sell Registrable Securities without registration under the Securities Act within the limitation of the exemptions provided by (i) Rule 144 under the Securities Act, as such rule may be amended from time to time, or (ii) any similar rule or regulation hereafter adopted by the SEC.

The Company represents and warrants that such registration statement or any information, document or report filed with the SEC in connection therewith or any information so made public shall not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements contained therein not misleading. The Company agrees to indemnify and hold harmless (or to the extent the same is not enforceable, make contribution to) the Holders, their partners, officers, directors, employees and agents, each broker, dealer or underwriter (within the meaning of the Securities Act) acting for any Holder in connection with any offering or sale by such Holder of Registrable Securities or any Person controlling (within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act) such Holder and any such broker, dealer or underwriter from and against any and all losses, claims, damages, liabilities or expenses (or actions in respect thereof) arising out of or resulting from any breach of the foregoing representation or warranty, all on terms and conditions comparable to those set forth in Section 5.

SECTION 7. Limitation on Registration Rights of Others.

The Company represents and warrants that it has not granted to any Person the right to request or require the Company to register any securities issued by the Company. The Company covenants and agrees that after the date hereof, so long as any Holder holds any Securities, the Company will not, directly or indirectly, grant to any Person or agree to or otherwise become obligated in respect of (a) any registration rights of securities of the Company upon the demand of any Person (including any shelf registration) without the prior written consent of the Required Holders; or (b) rights of registration in the nature or substantially in the nature of those set forth in Section 2 unless such rights are expressly subject and subordinated to the rights of registration of the Holders pursuant to Section 2 hereof on terms reasonably satisfactory to the Required Holders.

SECTION 8. Mergers, etc.

In addition to any other restrictions on mergers, consolidations and reorganizations contained in the certificate of incorporation, bylaws or agreements of the Company, the Company covenants and agrees that it shall not, directly or indirectly, enter into any merger, consolidation or reorganization in which the Company shall not be the surviving corporation and in which the Holders shall not have had the right to receive cash for all their Registrable Securities, unless the surviving corporation shall, prior to such merger, consolidation or reorganization, agree in a writing satisfactory in form, scope and substance to the Required Holders to assume the obligations of the Company under this Agreement, and for such purpose references hereunder to “Registrable Securities” shall be deemed to include the securities which such Holders would be entitled to receive in exchange for Registrable Securities pursuant to any such merger, consolidation or reorganization.

If, and as often as, there are any changes in the Securities by way of stock split, stock dividend, combination or classification, or through merger, consolidation, reorganization or recapitalization, or by any other means, appropriate adjustments shall be made in the provisions hereof as may be required, so that the rights and privileges granted hereby shall continue with respect to the Securities as so changed.

SECTION 9. Notices, etc.

All notices, consents, approvals, agreements and other communications provided hereunder shall be in writing or by telex or telecopy and shall be sufficiently given to the Initial Holders, the Holders or the Company if addressed or delivered to them:


If to the Initial Holders:		To the address listed underneath such Initial Holder’s name in the signature pages hereof.

with copies to:		Akin Gump Xxxxxxx Xxxxx & Xxxx LLP 0000 Xxxxxxxxx Xxxxxx, 00^xx Xxxxx Xxxxxxx, XX 00000 Attention: Xxxxx X. Xxxx III, Esq. Telecopier No.: (000) 000-0000

If to any other Holder:		At its last known address appearing on the books of the Company maintained for such purpose.

If to the Company:		Horizon Offshore, Inc. 0000 XxxxXxxx Xxxxxxxxx, Xxxxx 0000 Xxxxxxx, Xxxxx 00000 Attention: Executive Vice President and Chief Financial Officer Telecopier No.: (000) 000-0000


with copies to:		Jones, Walker, Waechter, Poitevent, Carrere & Xxxxxxx, L.L.P.
		000 Xx. Xxxxxxx Xxxxxx, Xxxxx 0000 Xxx Xxxxxxx, Xxxxxxxxx 00000 Attention: Xxxxxxx X. Xxxxxxx, Esq. Telecopier No.: (000) 000-0000

or at such other address as any party may designate to any other party by written notice. All such notices and communications shall be deemed to have been duly given: (i) at the time delivered by hand, if personally delivered, (ii) when received, if deposited in the mail, postage prepaid, (iii) when transmission is verified, if telecopied, and (iv) on the next Business Day, if timely delivered to an air courier guaranteeing overnight delivery.

SECTION 10. Entire Agreement.

The parties hereto agree that this Agreement constitutes the entire agreement among the parties with respect to the subject matter hereof and supersedes all prior agreements and understandings between them as to such subject matter; and there are no restrictions, agreements, arrangements, oral or written, between any or all of the parties relating to the subject matter hereof which are not fully expressed or referred to herein or therein.

SECTION 11. Amendments; Waivers and Further Agreements.

This Agreement may not be amended nor shall any waiver, change, modification, consent or discharge be effected except by an instrument in writing executed by or on behalf of the party or parties against whom enforcement of any amendment, waiver, change, modification, consent or discharge is sought; provided, however, that any waiver sought from the Holders of any provision of this Agreement which affects the Holders generally, and any action required to be taken by the Holders as a group pursuant to this Agreement, shall be given or taken by the Required Holders, and any such waiver or action so given or taken shall be binding on all Holders. No failure or delay by any party in exercising any right or remedy hereunder shall operate as a waiver thereof, and a waiver of a particular right or remedy on one occasion shall not be deemed a waiver of any other right or remedy or a waiver of the same right or remedy on any subsequent occasion.

Any waiver of any terms or conditions of this Agreement shall not operate as a waiver of any other breach of such terms or conditions or any other term or condition, nor shall any failure to enforce any provision hereof operate as a waiver of such provision or of any other provision hereof; provided, however, that no such written waiver, unless it by its own terms explicitly provides to the contrary, shall be construed to effect a continuing waiver of the provision being waived and no such waiver in any instance shall constitute a waiver in any other instance or for any other purpose or impair the right of the party against whom such waiver is claimed in all other instances or for all other purposes to require full compliance with such provision. Each of the parties hereto agrees to execute all such further instruments and documents and to take all such further action as the other parties may reasonably require in order to effectuate the terms and purposes of this Agreement.

SECTION 12. Assignment; Successors and Assigns.

This Agreement shall be binding upon and shall inure to the benefit of the parties hereto and their respective heirs, executors, legal representatives, successors and permitted assigns, including, without limitation, any Holders from time to time of the Registrable Securities. Anything in this Agreement to the contrary notwithstanding, the term “Holders” as used in this Agreement shall be deemed to include the registered Holders from time to time of the Series B Preferred Shares.

SECTION 13. Severability.

If any provision of this Agreement shall be held or deemed to be, or shall in fact be, invalid, inoperative or unenforceable as applied to any particular case in any jurisdiction or jurisdictions, or in all jurisdictions or in all cases, because any provision conflicts with any constitution, statute, rule or public policy, or for any other reason, such circumstance shall not have the effect of rendering the provision or provisions in question invalid, inoperative or unenforceable in any other jurisdiction or in any other case or circumstance or of rendering any other provision or provisions herein contained invalid, inoperative or unenforceable to the extent that such other provisions are not themselves actually in conflict with such constitution, statute, rule or public policy, but this Agreement shall be reformed and construed in any such jurisdiction or case as if such invalid, inoperative or unenforceable provision had never been contained herein and such provision reformed so that it would be valid, operative and enforceable to the maximum extent permitted in such jurisdiction or in such case.

SECTION 14. Counterparts.

This Agreement may be executed in two or more counterparts (each of which need not be executed by each of the parties), each of which shall be deemed an original, but all of which together shall constitute one and the same instrument, and in pleading or proving any provision of this Agreement, it shall not be necessary to produce more than one such counterpart.

SECTION 15. Gender; Usage.

Whenever used herein the singular number shall include the plural, the plural shall include the singular, and the use of any gender shall include all genders. The words “hereof,” “herein” and “hereunder,” and words of similar import, when used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this Agreement.

SECTION 16. Governing Law.

THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK OTHER THAN THE CONFLICTS OF LAWS PRINCIPLES THEREOF.

SECTION 17. Survival.

The indemnification and contribution provisions of Section 5 shall survive, notwithstanding the fact that any Shares shall cease to be Registrable Securities.

SECTION 18. Expenses.

Supplementing the provisions of Section 5, the Company shall be obligated to pay to the Holders, on demand, all costs and expenses (including, without limitation, court costs and attorneys’ fees and expenses and interest to the extent permitted by applicable law on overdue amounts) paid or incurred in collecting any sums due from, or enforcing any other obligations of, the Company.

SECTION 19. Specific Performance.

The Company recognizes that the rights of the Holders under this Agreement are unique and, accordingly, the Holders shall, in addition to such other remedies as may be available to any of them at law or in equity, have the right to enforce their rights hereunder by actions for injunctive relief and specific performance to the extent permitted by law. The Company agrees that monetary damages would not be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Agreement and hereby agrees to waive the defense in any action for specific performance that a remedy at law would be adequate. This Agreement is not intended to limit or abridge any rights of the Holders which may exist apart from this Agreement.

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed by their respective officers thereunto duly authorized as of the day and year first above written.


		HORIZON OFFSHORE, INC.

		By:

				Name: Title:

		INITIAL HOLDERS:

		XXXXXXX ASSOCIATES, L.P.

		By:		Xxxxxxx Capital Advisors, L.P., as General Partner

		By:		Xxxxxxx Associates, Inc., as General Partner

		By:

				Name: Title:


		Address:		000 Xxxxx Xxxxxx 00xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000


		XXXXXXX INTERNATIONAL, L.P.

		By:		Xxxxxxx International Capital Advisors Inc., as Attorney-in-Fact

		By:

				Name: Title:


		Address:		000 Xxxxx Xxxxxx 00xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000


		FALCON MEZZANINE PARTNERS, LP

		By:		Falcon Mezzanine Investments, LLC, its General Partner

		By:

				Name: Title:


		Address: Telecopier No.:		00 Xxxxxxxx Xxxxxx Xxxxxxx, Xxxxxxxxxxxxx 00000 (000) 000-0000


		D. E. SHAW LAMINAR PORTFOLIOS, L.L.C.

		By:

				Name: Title:


		Address:		000 Xxxx 00^xx Xx. Xxx Xxxx, Xxx Xxxx 00000



		Name: Xxxxx X. Xxxxxxx, in his individual capacity


		Address:		0000 0xx Xxx., Xxxxx 000 Xxx Xxxxxx, XX 00000



		Name:		Xxxxxxxx X. Xxxxxxx,
				in her individual capacity

		Address:		0000 0xx Xxx., Xxxxx 000
				Xxx Xxxxxx, XX 00000



		Name:		Xxxxx X. Xxxxxx,
				in his individual capacity

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		SACC PARTNERS, LP

		By:

				Name: Xxx Xxxxxxxx Title: General Partner

		Address:		00000 Xxxxx Xxxxxx Xxxx., Xxxxx 000
				Xxx Xxxxxxx, XX 00000


		XXXXX X. XXXXXXX AND XXXXXXXX X. XXXXXXX, JTWROS

		By:

				Name: Xxxxx Xxxxxxx in his capacity as joint tenant with right of survivorship

		By:

				Name: Xxxxxxxx Xxxxxxx in her capacity as joint tenant with right of survivorship

		Address:		0000 0xx Xxx., Xxxxx 000
				Xxx Xxxxxx, XX 00000


		XXXXXXX FAMILY TRUST

		By:

				Name: Xxxxx X. Xxxxxxx Xx. Title: Trustee

		By:

				Name: Xxxx X. Xxxxxxx Title: Trustee

		Address:		0000 0xx Xxx., Xxxxx 000
				Xxx Xxxxxx, XX 00000


		XXXXX XXXXXXX AND XXXX XXXXXXX IRREVOCABLE DESCENDANT’S TRUST

		By:

				Name: Xxxxx Xxxxxxx Title: Trustee

		By:

				Name: Xxxxxxxx Xxxxxxx Title: Trustee

		Address:		0000 0xx Xxx., Xxxxx 000
				Xxx Xxxxxx, XX 00000


		X. XXXXX & CO. RETIREMENT TRUST

		By:

				Name: Xxxxxx Xxxxx Title: Trustee

		Address:		00000 Xxxxx Xxxxxx Xxxx., Xxxxx 000
				Xxx Xxxxxxx, XX 00000


		X. XXXXX & CO., INC.

		By:

				Name: Xxxxxx Xxxxx Title: Chairman

		Address:		00000 Xxxxx Xxxxxx Xxxx., Xxxxx 000
				Xxx Xxxxxxx, XX 00000


		X. XXXXXX III GST dtd 12/31/91

		By:

				Name: Xxxxx X. Xxxxxx Title: Trustee

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		MILFAM, LLC

		By:

				Name: Xxxxx X. Xxxxxx Title: General Partner

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		XXXXXXXXX X. XXXXXX IRREV TR DTD 3/26/91

		By:

				Name: Xxxxx X. Xxxxxx Title: Trustee

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		XXXXXXXXX X. XXXXXX

		By:

				Name: Xxxxx X. Xxxxxx Title: Custodian FL/UTMA

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		XXXXX X. XXXXXX

		By:

				Name: Xxxxx X. Xxxxxx in his individual capacity

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		XXXXX X. XXXXXX TRUST A-4

		By: PNC Bank

		By:

				Name: Xxxx Xxxxxxx Title: Trustee

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		MILGRAT II — STAR

		By:

				Name: Title:

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		XXXXX X. XXXXXX

		By:

				Name: Title:

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		MILFAM I, L.P.

		By:

				Name: Xxxxx X. Xxxxxx Title: Limited Partner

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		MILFAM II, L.P.

		By:

				Name: Xxxxx X. Xxxxxx Title: Limited Partner

		Address:		0000 Xxxxxx Xxxxx
				Xxxxxx, XX 00000


		XXXXXXXX XXXXXXXX XXXXXXXX PARTNERS

		By:

				Name:Xxxx Xxxxxxx Title: General Partner

		Address:		00000 Xxxx Xxxx, Xxxxx 0000 Xxxxxx, XX 00000


		HEDGEHOG CAPITAL

		By:

				Name: Title:

		Address:		0000 Xxxx Xxxxxx Xxxxxx, Xxxxx 000 Xxxxxxxxx, XX 00000


		THE CONUS FUND, L.P.

		By:

				Name: Title:

		Address:		0 Xxxxxxxxxxx Xxxxx, 00^xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000


		THE CONUS FUND (QP), L.P.

		By:

				Name: Title:

		Address:		0 Xxxxxxxxxxx Xxxxx, 00^xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000


		EAST XXXXXX INC. (BVI)

		By:

				Name: Title:

		Address:		0 Xxxxxxxxxxx Xxxxx, 00^xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000


		THE CONUS FUND OFFSHORE LIMITED

		By:

				Name: Title:

		Address:		0 Xxxxxxxxxxx Xxxxx, 00^xx Xxxxx Xxx Xxxx, Xxx Xxxx 00000


		XXXXXXX XXXXX

		By:

				Name: Title:

		Address:		000 Xxxxxxxxxxx Xxxx, Xxxxxx xxx Xxx, XX 00000


		XXXXXXX PARTNERS, L.P.

		By:		Xxxxxxx Capital, LLC, as General Partner

		By:

				Name:
				Title:

		Address:		000 Xxxxxxx Xxxxxx, 0^xx Xxxxx Xxx Xxxx, XX 00000


		XXXXXX AND XXXXXXX XXXXX

		By:

				Name: Xxxxxx Xxxxx in his capacity as joint tenant with right of survivorship

		By:

				Name: Xxxxxxx Xxxxx in her capacity as joint tenant with right of survivorship

		Address:		00000 Xxxxxxxx Xxxxxx Xxxxxxxxx, XX 00000


		MANCHESTER SECURITIES CORP.

		By:

				Name:
				Title:

		Address:		000 Xxxxx Xxxxxx 00^xx Xxxxx Xxx Xxxx, XX 00000


		RIMROCK HIGH INCOME PLUS (MASTER) FUND

		By:

				Name:
				Title:

		Address:

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AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT AMONG HORIZON OFFSHORE, INC. AND THE INITIAL HOLDERS LISTED ON THE SIGNATURE PAGES HEREOF Dated as of December 19, 2005

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