Exhibit 13     CERTIFICATIONS

I, Tor Olav Troim,  Director and  President and Kate  Blankenship,  Director and
Secretary of CalPetro  Tankers (Isle of Man) Limited (the  "Company"),  certify,
pursuant to Section 906 of the  Sarbanes-Oxley  Act of 2002,  18 U.S.C.  Section
1350, that:

1. The Annual  Report on Form 20-F of the  Company for the annual  period  ended
December 31, 2005 (the "Report") fully complies with the requirements of Section
13(a)  of the  Securities  Exchange  Act of 1934  (15  U.S.C.  78m);  and 2. The
information  contained in the Report fairly presents,  in all material respects,
the financial condition and results of operations of the Company.


                                              /s/ Tor Olav Troim
                                              -----------------------
                                              Tor Olav Troim
                                              Director and President
\
                                              /s/ Kate Blankenship
                                              -----------------------
                                              Kate Blankenship
                                              Director and Secretary

                                              Date: June 30, 2006

A signed  original of this  written  statement  required by Section 906 has been
provided to the Company and will be retained by the Company and furnished to the
Securities and Exchange Commission or its staff upon request.