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Exhibit 10.2    
  

 
 

FOURTH AMENDMENT TO LOAN AGREEMENT    
  

        THIS FOURTH AMENDMENT TO LOAN AGREEMENT (this "Amendment"), dated as of September 30, 2002, is between HORIZON OFFSHORE CONTRACTORS, INC., a
Delaware corporation ("Contractors"), HORIZON SUBSEA SERVICES, INC., a Delaware corporation ("Subsea"), and HORIZON VESSELS, INC., a Delaware corporation ("Vessels", and together with
Contractors and Subsea the "Borrowers"), jointly and severally, each of the financial institutions which is or may from time to time become a party to such Loan Agreement, as amended (collectively,
"Lenders", and each a "Lender"), and SOUTHWEST BANK OF TEXAS, N.A., a national banking association, as agent (the "Agent"). 

 
 

RECITALS:    
  

        A.    Borrowers
and Lenders entered into that certain Loan Agreement dated as of March 26, 2001, as amended by First Amendment to Loan Agreement dated as of
April 17, 2002, Second Amendment to Loan Agreement dated as of May 30, 2002 and Third Amendment to Loan Agreement dated as of August 28, 2002 (the "Agreement"). 

        B.    Pursuant
to the Agreement, Horizon Offshore, Inc., a Delaware corporation ("Guarantor"), executed a Guaranty dated as of March 26, 2001 (the "Guaranty")
pursuant to which Guarantor guaranteed to Agent the payment and performance of the Obligations (as defined in the Agreement). 

        C.    Pursuant
to the Agreement all the other subsidiaries of Guarantor executed guaranty agreements pursuant to which such Subsidiaries guaranteed the obligations of Borrowers
under the Loan Agreement. 

        D.    Borrowers,
Lenders and Agent now desire to amend the Agreement as herein set forth. 

        NOW,
THEREFORE, in consideration of the premises herein contained and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties
hereto agree as follows: 

 
 

ARTICLE I.
  
    Definitions    
  

        Section I.1.    Definitions.    Capitalized terms used in this Amendment, to the extent not otherwise defined
herein, shall have the meanings given to such terms in the Agreement, as amended hereby. 

 
 

ARTICLE II.
  
    Amendments    
  

        Section II.1.    Amendment to Certain Definitions.    The definition of the term "Foreign Loan Agreement"
contained in Section 1.1 of the Agreement is amended to read in its entirety as follows: 

            "Foreign Loan Agreement" means that certain EXIM Guaranteed Loan Agreement among Borrowers, LLC, the Foreign
Agent and the lenders referred to therein, as amended by First Amendment to EXIM Guaranteed Loan Agreement dated April 17, 2002, Second Amendment to EXIM Guaranteed Loan Agreement dated
August 28, 2002 and Third Amendment to EXIM Guaranteed Loan Agreement dated September 30, 2002, and as the same may be further amended, supplemented or modified from time to time, and
any loan agreement or credit agreement executed in restatement and replacement therefor. 

 

        Section II.2.    Amendment to Section 9.6.    Section 9.6 of the Agreement shall be amended to
read in its entirety as follows. 

        Section 9.6.    Ratio of Funded Debt to EBITDA.    Guarantor and its Subsidiaries will at all times maintain a
Ratio of Funded Debt to EBITDA of not greater than (a) 3.85 to 1.00 for the quarter ended September 30, 2002, and (b) 3.50 to 1.00 for the quarter ending December 31, 2002
and at all times thereafter. The Ratio of Funded Debt to EBITDA will be calculated and tested quarterly as of the last day of each fiscal quarter of Guarantor, and for purposes of calculating the
Ratio of Funded Debt to EBITDA, EBITDA shall be calculated for the period of four fiscal quarters ended as of the date of calculation. Notwithstanding the foregoing, if the Vessel Purchase Event
occurs, the Ratio of Funded Debt to EBITDA shall be not greater than 3.90 to 1.00 for the fiscal quarter of Guarantor ending December 31, 2002; provided, however, that for the fiscal quarter of
Guarantor ending December 31, 2002, in calculating the Ratio of Funded Debt to EBITDA, an amount equal to fifty percent (50%) of the acquisition cost of the new vessel shall be subtracted from
Funded Debt in the numerator; provided, further, that as of the end of all other fiscal quarters of Guarantor, the Ratio of Funded Debt to EBITDA shall be not greater than 3.50 to 1.00 as provided in
clause (b) of the first sentence of this Section 9.6; and provided, further, that, except for the change in the Ratio of Funded Debt to EBITDA described in this sentence at the times
described in this section, this sentence does not constitute an amendment or waiver of any provision of this Agreement. 

        Section II.3.    Amendment to Exhibits.    Exhibit "I" to the Agreement (No Default Certificate) is amended to
conform in its entirety to Annex "A" to this Amendment. 

 
 

ARTICLE III.
  
    Conditions Precedent    
  

        Section III.1.    Conditions.    The effectiveness of this Amendment is subject to the receipt by Agent of the
following, each in form and substance satisfactory to Agent and Lenders: 

        (a)    Certificate-Each Borrower.    A certificate of the Secretary or another officer of each Borrower
acceptable to Agent certifying (i) resolutions of the board of directors of each Borrower which authorize the execution, delivery and performance by such Borrower of this Amendment and the
other Loan Documents to which such Borrower is or is to be a party, and (ii) the names of the officers of each Borrower authorized to sign this Amendment and each of the other Loan Documents to
which such Borrower is or is to be a party together with specimen signatures of such officers. 

        (b)    Amendment Fee.    An amendment fee in the amount of $8,000.00. 

        (c)    Additional Information.    Such additional documents, instruments and information as Lenders or Agent may
request. 

        Section III.2.    Additional Conditions.    The effectiveness of this Amendment is also subject to the
satisfaction of the additional conditions precedent that (a) the representations and warranties contained herein and in all other Loan Documents, as amended hereby, shall be true and correct as
of the date hereof as if made on the date hereof, (b) all proceedings, corporate or otherwise, taken in connection with the transactions contemplated by this Amendment and all documents,
instruments and other legal matters incident thereto shall be satisfactory to Lenders, and (c) no Event of Default or Unmatured Event of Default shall have occurred and be continuing. 

2

 
 
 

ARTICLE IV.
  
    Ratifications, Representations, and Warranties    
  

        Section IV.1.    Ratifications.    The terms and provisions set forth in this Amendment shall modify and
supersede all inconsistent terms and provisions set forth in the Agreement and except as expressly modified and superseded by this Amendment, the terms and provisions of the Agreement are ratified and
confirmed and shall continue in full force and effect. Borrowers and Lenders agree that the Agreement as amended hereby shall continue to be the legal, valid and binding obligation of such Persons
enforceable against such Persons in accordance with its terms. 

        Section IV.2.    Representations, Warranties and Agreements.    Each Borrower hereby represents and warrants to
Lenders that (a) the execution, delivery, and performance of this Amendment and any and all other Loan Documents executed or delivered in connection herewith have been authorized by all
requisite action on the part of such Borrower and will not violate the Organizational Documents of such Borrower, (b) the representations and warranties contained in the Agreement as amended
hereby, and all other Loan Documents are true and correct on and as of the date hereof as though made on and as of the date hereof, (c) no Event of Default or Unmatured Event of Default has
occurred and is continuing, (d) Borrowers are in full compliance with all covenants and agreements contained in the Agreement as amended hereby, (e) Borrowers are indebted to Lenders
pursuant to the terms of the Notes, as the same may have been renewed, modified, extended and rearranged, (f) the liens, security interests, encumbrances and assignments created and evidenced
by the Loan Documents are, respectively, valid and subsisting liens, security interests, encumbrances and assignments and secure the Notes as the same may have been renewed, modified or rearranged,
and (g) no Borrower has any claims, credits, offsets, defenses or counterclaims arising from the Loan Documents or any Lender's performance under the Loan Documents. 

 
 

ARTICLE V.
  
    Miscellaneous    
  

        Section V.1.    Survival of Representations and Warranties.    All representations and warranties made in this
Amendment or any other Loan Documents including any Loan Document furnished in connection with this Amendment shall fully survive the execution and delivery of this Amendment and the other Loan
Documents, and no investigation by any Lender or any closing shall affect the representations and warranties or the right of any Lender to rely on them. 

        Section V.2.    Reference to Agreement.    Each of the Loan Documents, including the Agreement and any and all
other agreements, documents, or instruments now or hereafter executed and delivered pursuant to the terms hereof or pursuant to the terms of the Agreement, as amended hereby, are hereby amended so
that any reference in such Loan Documents to the Agreement shall mean a reference to the Agreement, as amended hereby. 

        Section V.3.    Expenses.    As provided in the Agreement, Borrowers agree to pay on demand all costs and
expenses incurred by Agent in connection with the preparation, negotiation and execution of this Amendment and the other documents and instruments executed pursuant hereto and any and all amendments,
modifications and supplements thereto, including, without limitation, the costs and fees of Agent's legal counsel, and all costs and expenses incurred by Agent in connection with the enforcement or
preservation of any rights under the Agreement, as amended hereby, or any other Loan Document, including, without limitation, the costs and fees of Agent's legal counsel. 

        Section V.4.    Severability.    Any provision of this Amendment held by a court of competent jurisdiction to
be invalid or unenforceable shall not impair or invalidate the remainder of this 

3

 

Amendment and the effect thereof shall be confined to the provision so held to be invalid or unenforceable. 

        Section V.5.    APPLICABLE LAW.    THIS
AMENDMENT AND ALL OTHER LOAN DOCUMENTS EXECUTED PURSUANT HERETO SHALL BE DEEMED TO HAVE BEEN MADE AND TO BE PERFORMABLE IN HOUSTON, HARRIS COUNTY, TEXAS AND SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS.

        Section V.6.    Successors and Assigns.    This Amendment is binding upon and shall inure to the benefit of
Agent, Issuing Bank, each Lender and each Borrower and their respective successors and assigns, except that no Borrower may assign or transfer any of its rights or obligations hereunder without the
prior written consent of Agent. 

        Section V.7.    Counterparts.    This Amendment may be executed in one or more counterparts, each of which when
so executed shall be deemed to be an original, but all of which when taken together shall constitute one and the same instrument. 

        Section V.8.    Effect of Waiver.    No consent or waiver, express or implied, by Agent, Issuing Bank or any
Lender to or for any breach of or deviation from any covenant, condition or duty by any Borrower shall be deemed a consent or waiver to or of any other breach of the same or any other covenant,
condition or duty. 

        Section V.9.    Headings.    The headings, captions, and arrangements used in this Amendment are for
convenience only and shall not affect the interpretation of this Amendment. 

        Section V.10.    ENTIRE
AGREEMENT.    THIS AMENDMENT AND ALL OTHER INSTRUMENTS, DOCUMENTS, AND AGREEMENTS EXECUTED AND DELIVERED IN CONNECTION WITH THIS AMENDMENT
EMBODY THE FINAL, ENTIRE AGREEMENT AMONG THE PARTIES HERETO WITH RESPECT TO THE SUBJECT MATTER HEREOF AND THEREOF AND SUPERSEDE ANY AND ALL PRIOR COMMITMENTS, AGREEMENTS, REPRESENTATIONS AND
UNDERSTANDINGS, WHETHER WRITTEN OR ORAL, RELATING TO THIS AMENDMENT AND THE OTHER INSTRUMENTS, DOCUMENTS AND AGREEMENTS EXECUTED AND DELIVERED IN CONNECTION WITH THIS AMENDMENT, AND MAY NOT BE
CONTRADICTED OR VARIED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OR
DISCUSSIONS OF THE PARTIES HERETO. THERE ARE NO ORAL AGREEMENTS AMONG THE PARTIES HERETO.

        Executed
as of the date first written above. 

	 	 	BORROWERS:
	

 	
 	

HORIZON OFFSHORE CONTRACTORS, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZON SUBSEA SERVICES, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President

4

 

	

 	
 	

HORIZON VESSELS, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

AGENT:
	

 	
 	

SOUTHWEST BANK OF TEXAS, N.A., as Agent
	

 	
 	

By:
 Valerie Gibbs

Senior Vice President
	

 	
 	

LENDERS:
	

 	
 	

SOUTHWEST BANK OF TEXAS, N.A.
	

 	
 	

By:
 Valerie Gibbs

Senior Vice President
	

 	
 	

DRESDNER BANK LATEINAMERIKA AG
	

 	
 	

By:
 Alan Hills

Vice President
	

 	
 	

By:
 Sergio Goloubeff

First Vice President
	

 	
 	

BANK OF SCOTLAND
	

 	
 	

By:
 Joseph Fratus

Vice President
	

 	
 	

HIBERNIA NATIONAL BANK
	

 	
 	

By:
 Gary Culbertson

Vice President

5

 

	

 	
 	

COASTAL BANC SSB
	

 	
 	

By:
 Michael Turner

Executive Vice President

        The
undersigned Guarantor (a) hereby consents and agrees to this Amendment, (b) agrees that all references to the Loan Agreement contained in the Guaranty
Agreement-Guarantor executed by Guarantor shall constitute references to such Loan Agreement as amended by the Amendment and as the same may be further amended, and (c) agrees that the Guaranty
Agreement-Guarantor executed by Guarantor shall remain in full force and effect and shall continue to be the legal, valid and binding obligations of Guarantor, enforceable against Guarantor in
accordance with its terms and shall evidence Guarantor's guaranty of the Notes as renewed and extended from time to time. 

	 	 	HORIZON OFFSHORE, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President

        Each
of the undersigned Additional Guarantors (a) hereby consents and agrees to this Amendment, (b) agrees that all references to the Loan Agreement contained in the
Guaranty Agreement executed by such Additional Guarantor shall constitute references to such Loan Agreement as amended by the Amendment and as the same may be further amended, and (c) agrees
that the Guaranty Agreement executed by such Additional Guarantor shall remain in full force and effect and shall continue to be the legal, valid and binding obligations of such Additional Guarantor,
enforceable against such Additional Guarantor in accordance with its terms and shall evidence such Additional Guarantor's guaranty of the Notes as renewed and extended from time to time. 

	 	 	Additional Guarantors:
	

 	
 	

PROGRESSIVE PIPELINE CONTRACTORS, INC.

AFFILIATED MARINE CONTRACTORS, INC.

TEXAS OFFSHORE CONTRACTORS CORP.

FLEET PIPELINE SERVICES, INC.

GULF OFFSHORE CONSTRUCTION, INC.

BAYOU MARINE CONTRACTORS, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZON GROUP L.D.C.
	

 	
 	

By:
 David W. Sharp

Director

6

 

	

 	
 	

HORIZON OFFSHORE NIGERIA LTD.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

TIBURON INGENIERIA Y CONSTRUCCION, S.

DE R.L. DE C.V.
	

 	
 	

By:
 David W. Sharp

Secretary
	

 	
 	

HORIZON VESSELS INTERNATIONAL LTD.
	

 	
 	

By:
 David W. Sharp

Vice President
	

 	
 	

PT HORIZON INDONESIA
	

 	
 	

By:
 David W. Sharp

Commissioner
	

 	
 	

HORIZON OFFSHORE INTERNATIONAL LTD.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZON MARINE CONSTRUCTION LTD.
	 	 	By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZON OFFSHORE PTE. LTD.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

HORIZON OFFSHORE CONTRACTORS

(MAURITIUS) LTD.
	

 	
 	

By:
 David W. Sharp

Director

7

 

	

 	
 	

HORIZON MARINE CONSTRUCTION

(MAURITIUS) LTD.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

HORIZON C-BAY COSTA AFUERA, S. DE

R.L. DE C.V.
	

 	
 	

By:
 David W. Sharp

Member
	

 	
 	

HOC OFFSHORE, S. DE R.L. DE C.V.
	

 	
 	

By:
 R. Clay Etheridge

President
	

 	
 	

PT ARMANDI PRANAUPAYA
	

 	
 	

By:
 David W. Sharp

Director

8

 
 
 

LIST OF ANNEXES    
  

	Annex
	 	Document

	A	 	No Default Certificate

9

 
 
 

ANNEX "A"
  
    No Default Certificate    
  

10

QuickLinks

Exhibit 10.2

FOURTH AMENDMENT TO LOAN AGREEMENT

RECITALS

ARTICLE I. Definitions

ARTICLE II. Amendments

ARTICLE III. Conditions Precedent

ARTICLE IV. Ratifications, Representations, and Warranties

ARTICLE V. Miscellaneous

LIST OF ANNEXES

ANNEX "A" No Default CertificateQuickLinks
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Exhibit 10.3    
  

 
 

THIRD AMENDMENT TO EXIM GUARANTEED LOAN AGREEMENT    
  

        THIS THIRD AMENDMENT TO EXIM GUARANTEED LOAN AGREEMENT (this "Amendment"), dated as of September 30, 2002, is between HORIZON OFFSHORE
CONTRACTORS, INC., a Delaware corporation ("Contractors"), HORIZON SUBSEA SERVICES, INC., a Delaware corporation ("Subsea"), HORIZON VESSELS, INC., a Delaware corporation
("Vessels"), and HORIZEN, L.L.C., a Delaware limited liability company ("LLC", and together with Contractors, Subsea and Vessels the "Borrowers"), jointly and severally, each of the financial
institutions which is or may from time to time become a party to such Loan Agreement, as amended (collectively, "Lenders", and each a "Lender"), and SOUTHWEST BANK OF TEXAS, N.A., a national
banking association, as agent (the "Agent"). 

 
 

RECITALS:    
  

        A.    Borrowers
and Lenders entered into that certain EXIM Guaranteed Loan Agreement dated as of August 15, 2001, as amended by First Amendment to EXIM Guaranteed Loan
Agreement dated as of April 17, 2002 and Second Amendment to EXIM Guaranteed Loan Agreement dated as of August 28, 2002 (the "Agreement"). 

        B.    Pursuant
to the Agreement, each Borrower, Horizon Offshore, Inc., a Delaware corporation, and Horizon Offshore Contractors, Ltd., a company organized and
existing under the laws of the Cayman Islands, each executed a Guaranty dated as of August 15, 2001, and ECH Offshore, S. de R.L. de C.V., a company organized and existing under the laws of
Mexico, executed a Guaranty dated as of August 15, 2001 (under Mexican law) and a Guaranty dated as of May 30, 2002 (under Texas law), pursuant to which such Persons (as defined in the
Agreement) guaranteed to Agent the payment and performance of the Obligations (as defined in the Agreement). 

        C.    Pursuant
to the Agreement all the other subsidiaries of Parent executed guaranty agreements pursuant to which such subsidiaries guaranteed the obligations of Borrowers
under the Loan Agreement. 

        D.    Borrowers,
Lenders and Agent now desire to amend the Agreement as herein set forth. 

        NOW,
THEREFORE, in consideration of the premises herein contained and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties
hereto agree as follows: 

 
 

ARTICLE I.
  
    Definitions    
  

        Section I.1.    Definitions.    Capitalized terms used in this Amendment, to the extent not otherwise defined
herein, shall have the meanings given to such terms in the Agreement, as amended hereby. 

 
 

ARTICLE II.
  
    Amendments    
  

        Section II.1.    Amendment to Certain Definitions.    The definition of each of the following terms contained
in Section 1.1 of the Agreement is amended to read in its respective entirety as follows: 

            "Domestic Loan Agreement" means that certain Loan Agreement dated March 26, 2001, among Borrowers other
than LLC, the Domestic Agent and the lenders referred to therein, as amended by First Amendment to Loan Agreement dated April 17, 2002, Second Amendment to Loan Agreement dated May 30,
2002, Third Amendment to Loan Agreement dated as of 

 

August 28, 2002, and Fourth Amendment to Loan Agreement dated as of September 30, 2002, as the same may be further amended, supplemented or modified from time to time, and any loan
agreement or credit agreement executed in restatement and replacement therefor. 

            "Loan Authorization Agreement" means the Second Amended and Restated Loan Authorization Agreement dated
October 15, 2002, between Eximbank and Lender, and all amendments thereto and all restatements and replacements thereof, and the Loan Authorization Agreement shall constitute a Loan Document. 

        Section II.2.    Amendment to Section 9.6.    Section 9.6 of the Agreement shall be amended to
read in its entirety as follows. 

        Section 9.6.    Ratio of Funded Debt to EBITDA.    Parent and its Subsidiaries will at all times maintain a
Ratio of Funded Debt to EBITDA of not greater than (a) 3.85 to 1.00 for the quarter ended September 30, 2002, and (b) 3.50 to 1.00 for the quarter ending December 31, 2002
and at all times thereafter. The Ratio of Funded Debt to EBITDA will be calculated and tested quarterly as of the last day of each fiscal quarter of Parent, and for purposes of calculating the Ratio
of Funded Debt to EBITDA, EBITDA shall be calculated for the period of four fiscal quarters ended as of the date of calculation. Notwithstanding the foregoing, if the Vessel Purchase Event occurs, the
Ratio of Funded Debt to EBITDA shall be not greater than 3.90 to 1.00 for the fiscal quarter of Parent ending December 31, 2002; provided, however, that for the fiscal quarter of Parent ending
December 31, 2002, in calculating the Ratio of Funded Debt to EBITDA, an amount equal to fifty percent (50%) of the acquisition cost of the new vessel shall be subtracted from Funded Debt in
the numerator; provided, further, that as of the end of all other fiscal quarters of Parent, the Ratio of Funded Debt to EBITDA shall be not greater than 3.50 to 1.00 as provided in clause (b)
of the first sentence of this Section 9.6; and provided, further, that, except for the change in the Ratio of Funded Debt to EBITDA described in this sentence at the times described in this
section, this sentence does not constitute an amendment or waiver of any provision of this Agreement. 

        Section II.3.    Amendment to Schedules and Exhibits.    Exhibit "V" to the Agreement (No Default Certificate)
is amended to conform in its entirety to Annex "A" to this Amendment. 

 
 

ARTICLE III.
  
    Conditions Precedent    
  

        Section III.1.    Conditions.    The effectiveness of this Amendment is subject to the receipt by Agent of the
following, each in form and substance satisfactory to Agent and Lenders: 

        (a)    Certificate-Each Corporate Borrower.    A certificate of the Secretary or another officer of each
Corporate Borrower acceptable to Agent certifying (i) resolutions of the board of directors of each Corporate Borrower which authorize the execution, delivery and performance by such Corporate
Borrower of this Amendment and the other Loan Documents to which such Corporate Borrower is or is to be a party, and (ii) the names of the officers of each Corporate Borrower authorized to sign
this Amendment and each of the other Loan Documents to which such Corporate Borrower is or is to be a party together with specimen signatures of such officers. 

        (b)    Certificate—LLC.    A certificate of a Manager or another officer of LLC acceptable to Agent
certifying (i) resolutions of the Members of LLC which authorize the execution, delivery and performance by LLC of this Amendment and the other Loan Documents to which LLC is or is to be a
party, and (ii) the names of the Managers or other officers of LLC 

2

 

authorized to sign this Amendment and each of the other Loan Documents to which LLC is or is to be a party together with specimen signatures of such Persons. 

        (c)    Amendment Fee.    An amendment fee in the amount of $12,000.00. 

        (d)    Additional Information.    Such additional documents, instruments and information as Lenders, Agent or Eximbank
may request. 

 
 

ARTICLE IV.
  
    Ratifications, Representations, and Warranties    
  

        Section IV.1.    Ratifications.    The terms and provisions set forth in this Amendment shall modify and
supersede all inconsistent terms and provisions set forth in the Agreement and except as expressly modified and superseded by this Amendment, the terms and provisions of the Agreement are ratified and
confirmed and shall continue in full force and effect. Borrowers and Lenders agree that the Agreement as amended hereby shall continue to be the legal, valid and binding obligation of such Persons
enforceable against such Persons in accordance with its terms. 

        Section IV.2.    Representations, Warranties and Agreements.    Each Borrower hereby represents and warrants to
Lenders that (a) the execution, delivery, and performance of this Amendment and any and all other Loan Documents executed or delivered in connection herewith have been authorized by all
requisite action on the part of such Borrower and will not violate the Organizational Documents of such Borrower, (b) the representations and warranties contained in the Agreement as amended
hereby, and all other Loan Documents are true and correct on and as of the date hereof as though made on and as of the date hereof, (c) upon the effectiveness of this Amendment no Event of
Default or Unmatured Event of Default will exist, (d) upon the effectiveness of this Amendment Borrowers will be in full compliance with all covenants and agreements contained in the Agreement
as amended hereby, (e) Borrowers are indebted to Lenders pursuant to the terms of the Notes, as the same may have been renewed, modified, extended and rearranged, (f) the liens, security
interests, encumbrances and assignments created and evidenced by the Loan Documents are, respectively, valid and subsisting liens, security interests, encumbrances and assignments and secure the Notes
as the same may have been renewed, modified or rearranged, and (g) no Borrower has any claims, credits, offsets, defenses or counterclaims arising from the Loan Documents or any Lender's
performance under the Loan Documents. 

 
 

ARTICLE V.
  
    Miscellaneous    
  

        Section V.1.    Survival of Representations and Warranties.    All representations and warranties made in this
Amendment or any other Loan Documents including any Loan Document furnished in connection with this Amendment shall fully survive the execution and delivery of this Amendment and the other Loan
Documents, and no investigation by any Lender or any closing shall affect the representations and warranties or the right of any Lender to rely on them. 

        Section V.2.    Reference to Agreement.    Each of the Loan Documents, including the Agreement and any and all
other agreements, documents, or instruments now or hereafter executed and delivered pursuant to the terms hereof or pursuant to the terms of the Agreement, as amended hereby, are hereby amended so
that any reference in such Loan Documents to the Agreement shall mean a reference to the Agreement, as amended hereby. 

        Section V.3.    Expenses.    As provided in the Agreement, Borrowers agree to pay on demand all costs and
expenses incurred by Agent in connection with the preparation, negotiation and execution of 

3

 

this Amendment and the other documents and instruments executed pursuant hereto and any and all amendments, modifications and supplements thereto, including, without limitation, the costs and fees of
Agent's legal counsel, and all costs and expenses incurred by Agent in connection with the enforcement or preservation of any rights under the Agreement, as amended hereby, or any other Loan Document,
including, without limitation, the costs and fees of Agent's legal counsel. 

        Section V.4.    Severability.    Any provision of this Amendment held by a court of competent jurisdiction to
be invalid or unenforceable shall not impair or invalidate the remainder of this Amendment and the effect thereof shall be confined to the provision so held to be invalid or unenforceable. 

        Section V.5.    APPLICABLE LAW.    THIS
AMENDMENT AND ALL OTHER LOAN DOCUMENTS EXECUTED PURSUANT HERETO SHALL BE DEEMED TO HAVE BEEN MADE AND TO BE PERFORMABLE IN HOUSTON, HARRIS COUNTY, TEXAS AND SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS.

        Section V.6.    Successors and Assigns.    This Amendment is binding upon and shall inure to the benefit of
Agent, Issuing Bank, each Lender and each Borrower and their respective successors and assigns, except that no Borrower may assign or transfer any of its rights or obligations hereunder without the
prior written consent of Agent. 

        Section V.7.    Counterparts.    This Amendment may be executed in one or more counterparts, each of which when
so executed shall be deemed to be an original, but all of which when taken together shall constitute one and the same instrument. 

        Section V.8.    Effect of Waiver.    No consent or waiver, express or implied, by Agent, Issuing Bank or any
Lender to or for any breach of or deviation from any covenant, condition or duty by any Borrower shall be deemed a consent or waiver to or of any other breach of the same or any other covenant,
condition or duty. 

        Section V.9.    Headings.    The headings, captions, and arrangements used in this Amendment are for
convenience only and shall not affect the interpretation of this Amendment. 

        Section V.10.    ENTIRE
AGREEMENT.    THIS AMENDMENT AND ALL OTHER INSTRUMENTS, DOCUMENTS, AND AGREEMENTS EXECUTED AND DELIVERED IN CONNECTION WITH THIS AMENDMENT
EMBODY THE FINAL, ENTIRE AGREEMENT AMONG THE PARTIES HERETO
WITH RESPECT TO THE SUBJECT MATTER HEREOF AND THEREOF AND SUPERSEDE ANY AND ALL PRIOR COMMITMENTS, AGREEMENTS, REPRESENTATIONS AND UNDERSTANDINGS, WHETHER WRITTEN OR ORAL, RELATING TO THIS AMENDMENT
AND THE OTHER INSTRUMENTS, DOCUMENTS AND AGREEMENTS EXECUTED AND DELIVERED IN CONNECTION WITH THIS AMENDMENT, AND MAY NOT BE CONTRADICTED OR VARIED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT
ORAL AGREEMENTS OR DISCUSSIONS OF THE PARTIES HERETO. THERE ARE NO ORAL AGREEMENTS AMONG THE PARTIES HERETO.

4

 

        Executed
as of the date first written above. 

	 	 	BORROWERS:
	

 	
 	

HORIZON OFFSHORE CONTRACTORS, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZEN, L.L.C.
	

 	
 	

By:
 R. Clay Etheridge

President
	

 	
 	

HORIZON SUBSEA SERVICES, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZON VESSELS, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

AGENT:
	

 	
 	

SOUTHWEST BANK OF TEXAS, N.A., as Agent
	

 	
 	

By:
 Valerie Gibbs

Senior Vice President
	

 	
 	

LENDERS:
	

 	
 	

SOUTHWEST BANK OF TEXAS, N.A.
	

 	
 	

By:
 Valerie Gibbs

Senior Vice President

5

 

	

 	
 	

DRESDNER BANK LATEINAMERIKA AG
	

 	
 	

By:
 Alan Hills

Vice President
	

 	
 	

By:
 Sergio Goloubeff

First Vice President
	

 	
 	

BANK OF SCOTLAND
	

 	
 	

By:
 Joseph Fratus

Vice President
	

 	
 	

HIBERNIA NATIONAL BANK
	

 	
 	

By:
 Gary Culbertson

Vice President

        Each
of the undersigned Guarantors (a) hereby consents and agrees to this Amendment, (b) agrees that all references to the Loan Agreement contained in the Guaranty
Agreement executed by such Person shall constitute references to such Loan Agreement as amended by this Amendment and as the same
may be further amended, and (c) agrees that the Guaranty Agreement executed by such Person shall remain in full force and effect and shall continue to be the legal, valid and binding
obligations of such Guarantor, enforceable against such Guarantor in accordance with its terms and shall evidence such Guarantor's guaranty of the Notes as renewed, modified and extended from time to
time. 

	 	 	HORIZON OFFSHORE, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZON OFFSHORE CONTRACTORS, LTD.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

ECH OFFSHORE, S. DE R.L. DE C.V.
	

 	
 	

By:
 R. Clay Etheridge

Sole Manager

6

 

	

 	
 	

Other Guarantors
	

 	
 	

PROGRESSIVE PIPELINE CONTRACTORS, INC.

AFFILIATED MARINE CONTRACTORS, INC.

TEXAS OFFSHORE CONTRACTORS CORP.

FLEET PIPELINE SERVICES, INC.

GULF OFFSHORE CONSTRUCTION, INC.

BAYOU MARINE CONTRACTORS, INC.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZON GROUP L.D.C.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

HORIZON OFFSHORE NIGERIA LTD.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

TIBURON INGENIERIA Y CONSTRUCCION, S.

DE R.L. DE C.V.
	

 	
 	

By:
 David W. Sharp

Secretary
	

 	
 	

HORIZON VESSELS INTERNATIONAL LTD.
	

 	
 	

By:
 David W. Sharp

Vice President
	

 	
 	

PT HORIZON INDONESIA
	

 	
 	

By:
 David W. Sharp

Commissioner
	

 	
 	

HORIZON OFFSHORE INTERNATIONAL LTD.
	

 	
 	

By:
 David W. Sharp

Executive Vice President

7

 

	

 	
 	

HORIZON MARINE CONSTRUCTION LTD.
	

 	
 	

By:
 David W. Sharp

Executive Vice President
	

 	
 	

HORIZON OFFSHORE PTE. LTD.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

HORIZON OFFSHORE CONTRACTORS

(MAURITIUS) LTD.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

HORIZON MARINE CONSTRUCTION

(MAURITIUS) LTD.
	

 	
 	

By:
 David W. Sharp

Director
	

 	
 	

HORIZON C-BAY COSTA AFUERA, S.

DE R.L. DE C.V.
	

 	
 	

By:
 David W. Sharp

Member
	

 	
 	

HOC OFFSHORE, S. DE R.L. DE C.V.
	

 	
 	

By:
 R. Clay Etheridge

President
	

 	
 	

PT ARMANDI PRANAUPAYA
	

 	
 	

By:
 David W. Sharp

Director

8

 
 
 

LIST OF ANNEXES    
  

	Annex
	 	Document

	A	 	No Default Certificate

9

 
 
 

ANNEX "A"
  
    No Default Certificate    
  

10

QuickLinks

Exhibit 10.3

THIRD AMENDMENT TO EXIM GUARANTEED LOAN AGREEMENT

RECITALS

ARTICLE I. Definitions

ARTICLE II. Amendments

ARTICLE III. Conditions Precedent

ARTICLE IV. Ratifications, Representations, and Warranties

ARTICLE V. Miscellaneous

LIST OF ANNEXES

ANNEX "A" No Default Certificate

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