Amendment No. 2 to Promissory Note



 Exhibit 10.1 

EXECUTION VERSION 
 AMENDMENT NO.
2 TO PROMISSORY NOTE 
 This Amendment No. 2 to Promissory Note (this “Amendment”), dated as of October 1,
2015, is entered into by and among Odyssey Marine Enterprises, Ltd., a Bahamas company (the “Company”), whose address is Lyford Financial Centre, Lyford Cay, P.O. Box N-7776, Nassau, Bahamas, Odyssey Marine Exploration, Inc., a
Nevada corporation (the “Guarantor”), and Minera del Norte, S.A. de C.V. (the “Lender”). Capitalized terms used in this Amendment but not otherwise defined herein shall have the respective meanings ascribed to them
in the Promissory Note (as defined below). 
 R E C I T A L S: 

WHEREAS, the Company, the Guarantor and the Lender entered into that certain Promissory Note, dated as of March 11, 2015 (as amended by
Amendment No. 1 thereto dated as of April 10, 2015, and in effect as of the date hereof, the “Promissory Note”); 

WHEREAS, the Lender remains the Holder of the Promissory Note; and 

WHEREAS, the Company, Guarantor and the Lender desire to amend the Promissory Note as provided herein. 

NOW THEREFORE, in consideration of the foregoing and the mutual covenants, and agreements hereinafter set forth, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound, hereby agree as follows: 

1. Section 2(a). Section 2(a) of the Promissory Note is hereby amended by deleting it in its entirety and inserting the following in lieu
thereof: 
 “(a) Unless otherwise converted as provided herein, the Adjusted Principal Balance shall be due and payable
in full upon written demand by the Lender; provided that the Lender agrees that it shall not demand payment of the Adjusted Principal Balance earlier than the first to occur of: (i) 30 days after the date on which (x) SEMARNAT makes a
determination with respect to the current application for the Manifestacion de Impacto Ambiental relating to the Don Diego Project, which determination is other than an approval or (y) the Company or any of its affiliates withdraws such
application without the Lender’s prior written consent; (ii) termination by Odyssey Marine Exploration, Inc. of the Stock Purchase Agreement; (iii) the occurrence of an Event of Default; (iv) December 31, 2015; or
(v) if and only if the Investor shall have terminated the Stock Purchase Agreement pursuant to Section 8.1(d)(iii) thereof, March 30, 2016 (the date of such demand being the “Maturity Date”).” 

2. Section 3(m). Section 3(m) of the Promissory Note is hereby amended by deleting the period at the end thereof, and adding the following:

 “; or (iv) any breach of Section 5(i) or (j) shall occur.” 







 3. Section 5. Section 5 of the Promissory Note is hereby amended by adding the following new
clauses immediately after clause (h) of Section 5: 
 “(i) Prepayment of Other Debt. Neither the
Company, the Guarantor nor any of their respective Subsidiaries shall prepay any Debt thereof so long as any portion of the Adjusted Principal Balance hereunder is outstanding, it being understood that this Section 5(i) shall not restrict the
ability to pay Debt at its stated maturity as in effect on the date hereof. 
 (j) Granting of Encumbrances. Neither
the Company, the Guarantor nor any of their respective Subsidiaries shall grant any Encumbrance on any property or asset thereof.” 
 4.
Release. In consideration of, among other things, Lender’s execution and delivery of this Amendment, each of the Releasors hereby forever agrees and covenants not to sue or prosecute against the Releasees and hereby forever waives,
releases and discharges each Releasee from, any and all Claims that such Releasor now has or hereafter may have, of whatsoever nature and kind, whether known or unknown, whether arising at law or in equity, against the Releasees, based in whole or
in part on facts whether or not now known, existing on or before September 30, 2015, that relate to, arise out of or otherwise are in connection with this Amendment, the Promissory Note, the Stock Purchase Agreement or any transactions
contemplated hereby, thereby or any acts or omissions in connection therewith or the negotiation thereof, provided, however, that the foregoing shall not release the “Investor” and “Guarantor” (as such terms are defined in the
Stock Purchase Agreement) from the express obligations of either under the Stock Purchase Agreement arising on or after October 1, 2015. The provisions of this Section 5 shall survive the repayment of the Promissory Note. 

5. Representation and Warranties. The Company represents and warrants that the representations and warranties set forth in Section 4 of the
Promissory Note are true and correct as of the date hereof, as if made as of the date hereof, except to the extent such representations and warranties expressly relate to an earlier date, in which case as of such earlier date. The Company and the
Guarantor hereby represent and warrant to the Lender that this Amendment (a) has been duly authorized by the board of directors, or similar governing body, of the Company and the Guarantor, including by the approval of a majority of the
directors of the Guarantor that are not affiliated with the Lender, (b) was duly executed by the Company and the Guarantor, and (c) constitutes a legal, valid and binding obligation of the Company and the Guarantor. 

6. Full Force and Effect. Except as expressly modified by this Amendment, all of the terms, covenants, agreements, conditions and other provisions of
the Promissory Note shall remain in full force and effect in accordance with their respective terms. This Amendment shall not constitute an amendment or waiver of any provision of the Promissory Note except as expressly set forth herein. Upon the
execution and delivery hereof, the Promissory Note shall thereupon be deemed to be amended and supplemented as hereinabove set forth as fully and with the same effect as if the amendments and supplements made hereby were originally set forth in the
Promissory Note, and this Amendment and the Promissory Note shall henceforth be read, taken and construed as one and the same instrument, but such amendments and supplements shall not 

  
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operate so as to render invalid or improper any action heretofore taken under the Promissory Note. As used in the Promissory Note, the terms “this Note,” “herein,”
“hereinafter,” “hereto,” and words of similar import shall mean and refer to, from and after the date of this Amendment, unless the context requires otherwise, the Promissory Note as amended by this Amendment. For the avoidance
of doubt, references to the phrases “the date of this Note” or “the date hereof”, wherever used in the Promissory Note, as amended by this Amendment, shall mean March 11, 2015. In the event of any inconsistency between this
Amendment and the Promissory Note with respect to the matters set forth herein, this Amendment shall take precedence. 
 7. Governing Law. This
Amendment, and all claims arising out of or relating to it, shall be governed by and construed in accordance with the laws of the State of New York, excluding that body of law relating to conflict of laws. 

8. Counterparts. This Amendment may be executed in any number of counterparts, each of which shall be enforceable against the parties actually
executing such counterparts, and all of which together shall constitute one instrument. 
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 IN WITNESS WHEREOF, the Company, the Guarantor and the Lender have caused this Amendment
to be executed as of the day and year as first written above. 
  

			
	ODYSSEY MARINE ENTERPRISES, LTD.
		
	By:	 	 /s/ Mark D. Gordon

	Name:	 	Mark D. Gordon
	Title:	 	Vice President & Director
		
	Address:	 	
		 	
		 	
		 	
	
	ODYSSEY MARINE EXPLORATION, INC.
		
	By:	 	 /s/ Mark D. Gordon

	Name:	 	Mark D. Gordon
	Title:	 	President & CEO
		
	Address:	 	
		 	
		 	
		 	


  

			
	ACCEPTED AND AGREED TO:
	MINERA DEL NORTE, S.A. DE C.V.
		
	By:	 	 /s/ Andres Gonzales Saravaria

	Name:	 	Andres Gonzales Saravaria
	Title:	 	General Counsel and Attorney in Fact
		
	Address: