MARINE PETROLEUM TRUST
ANNOUNCES SECOND QUARTER CASH DISTRIBUTION

DALLAS, Texas, May 19, 2008 – U. S. Trust, as Trustee of the Marine Petroleum Trust (NASDAQ: MARPS), today declared a quarterly cash distribution to the holders of its units of beneficial interest of $.745729 per unit, payable on June 30, 2008, to unit holders of record on May 30, 2008.