Exhibit 24.2

                          MOBIL MARINE FINANCE COMPANY I INC.

                               POWER OF ATTORNEY

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     KNOW ALL PERSONS BY THESE PRESENTS, that each of the undersigned directors
and/or officers of Mobil Marine Finance Company I Inc., a Delaware corporation,
hereby constitutes and appoints CHARLES H. DUBOIS, MAXINE C. SCHNITZER and
GORDON G. GARNEY his or her true and lawful attorneys-in-fact and agents, each
of such persons having full power to act without the others, in any and all
capacities, (i) to execute and file in his or her name and capacity on behalf of
Mobil Marine Finance Company I Inc. and (ii) to sign in his or her name and
capacity on behalf of the individual, a Shelf Registration Statement on Form S-3
or any appropriate form including amendments and/or post-effective amendments
and supplements, together with all exhibits and other documents necessary or
appropriate in connection therewith, for registration with the Securities and
Exchange Commission, Washington, D.C., under the Securities Act of 1933, as
amended, of $650,000,000 of Pass Through Certificates and a Mobil Corporation
Guaranty with respect thereto.

     AND FURTHER, that each of the undersigned directors and/or officers of
Mobil Marine Finance Company I Inc. hereby grants to said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform any and all
acts and things essential and necessary to be done in and about the premises, as
fully to all intents and purposes as he or she might or could do in person in
connection with the proper exercise of the powers granted hereunder.

     IN WITNESS WHEREOF, the undersigned as directors and/or officers of Mobil
Marine Finance Company I Inc. or as individuals, have hereunto set their hands
as of the 1st day of October, 1996.

NAME AND TITLE      /s/ Walter R. Arnheim
                    ----------------------------------------------------------
                    Walter R. Arnheim, Director, President: Principal Executive
                    Officer

NAME AND TITLE      /s/Debra D. Drumheller
                    ----------------------------------------------------------
                    Debra D. Drumheller, Director, Chief Financial Officer:
                    Principal Financial Officer

NAME AND TITLE      /s/ Martha F. Keeth
                    ----------------------------------------------------------
                    Martha F. Keeth, Controller:  Principal Accounting Officer

NAME AND TITLE      /s/ Ralph N. Johanson, Jr.
                    ----------------------------------------------------------
                    Ralph N. Johanson, Jr., Director