EXHIBIT 99.2


                    RATIFICATION AGREEMENT

        RATIFICATION AGREEMENT (the "AGREEMENT"), dated as of
July 15, 1997 made by the parties hereto (the "RATIFYING
PARTIES") in favor of BANKERS TRUST COMPANY, having an office  at
130 Liberty Street, New York, New York 10006, in its capacity as
administrative agent (in such capacities and together with any
successors in such capacities, "ADMINISTRATIVE AGENT") for the
lending institutions (each, a "BANK"; collectively, the "BANKS")
under the Credit Agreement (as hereinafter defined.)


                      R E C I T A L S :


        A. The Credit Agreement dated as of February 12, 1997 and
amended and restated as of July 15, 1997 (the "CREDIT   
AGREEMENT") has been executed and delivered by Global Marine     
Inc., the Administrative Agent, Societe Generale, as Co-Agent,    
and the Banks.  Capitalized terms used but not defined herein     
shall have the meaning assigned to them in the Credit    
Agreement.


         B. The conditions set forth in Section 5 of the Credit
Agreement have been satisfied (or waived).

         C. The Credit Agreement amends, restates and   
supercedes the original Credit Agreement dated as of February 12,
1997 (the "ORIGINAL CREDIT AGREEMENT").


                       A G R E E M E N T :


         Each of the Ratifying Parties hereby agrees to,    
ratifies and confirms the following:

         1. Each of the respective Credit Documents executed and  
delivered by such Ratifying Party (other than the Original    
Credit Agreement) shall continue in full force and effect in     
accordance with its terms.

         2.All Obligations under the Original Credit Agreement    
and the other Credit Documents shall continue to be outstanding   
except as expressly modified by the Credit Agreement and shall    
be governed in all respects by the Credit Agreement and the     
other Credit Documents.

         3. The execution of the Credit Agreement does not   
constitute a novation, satisfaction, payment or reborrowing of    
any Obligation under the Original Credit Agreement or any other   
Credit Document except as expressly modified by the Credit     
Agreement nor does it operate as a waiver of any right, power     
or remedy of any Lender under any Credit Document (other than     
the Original Credit Agreement, and then only to the extent the    
terms thereof are modified by the Credit Agreement).

         4. All references to the Original Credit Agreement in    
any Credit Document or other document or instrument delivered in
connection therewith shall be deemed to refer to the Credit
Agreement and the provisions thereof.

         5. With respect to each Credit Document, this Agreement  
shall be governed by and construed in accordance with the laws of
the jurisdiction which govern such Credit Document.

         6. This Agreement may be executed in any number of     
separate counterparts, each of which, when so executed, shall     
be deemed an original, and all of which taken together shall be   
deemed to constitute but one and the same instrument.  Any of    
the parties hereto may execute this Agreement by signing any
such counterpart.

         7. This Agreement shall be binding upon each respective  
Ratifying Party upon its execution hereof. 

      
                    [Signature Pages Follow]

   
         
         IN WITNESS WHEREOF, the parties hereto have caused     
this Agreement to be duly executed as of the date first set     
forth above. 

                                  BANKERS TRUST COMPANY,
                                   Individually and 
                                   as Administrative Agent


                                  By:/s/ Patricia Hogan
                                  Name: Patricia Hogan
                                  Title: Vice President


                                  GLOBAL MARINE BISMARCK SEA INC. 
                                    as Guarantor


                                  By:/S/ James L. McCulloch
                                  Name: James L. McCulloch
                                  Title: Vice President


                                GLOBAL MARINE DEEPWATER
                                  DRILLING INC.
                                  as Guarantor


                                  By:/s/ James L. McCulloch
                                  Name: James L. McCulloch
                                  Title: Vice President


                                GLOBAL MARINE DRILLING COMPANY 
                                  as Guarantor


                                  By:/s/ James L. McCulloch
                                  Name: James L. McCulloch      
                                  Title: Vice President
                                                                  

                                GLOBAL MARINE NORTH SEA INC. 
                                  as Guarantor


                                  By:/s/ James L. McCulloch
                                  Name: James L. McCulloch
                                  Title: Vice President


                                GLOBAL MARINE WEST AFRICA INC. 
                                  as Guarantor


                                  By:/s/ James L. McCulloch
                                  Name: James L. McCulloch
                                  Title: Vice President


                                PETDRILL, INC.  
                                  as Guarantor


                                  By:/s/ James L. McCulloch
                                  Name: James L. McCulloch      
                                  Title: Vice President
                                                                  
                                GLOBAL MARINE SOUTH AMERICA LLC 
                                  as Guarantor


                                  By:/s/ James L. McCulloch
                                  Name: James L. McCulloch
                                  Title:Vice President


                                TURNKEY VENTURES DE MEXICO INC.


                                  By:/s/ John R. Munson
                                  Name: John R. Munson
                                  Title:President