Later the tanker transferred to the Military Sea Transportation Service as USNS Mission Dolores (T-AO-115).

SS Mission Dolores was laid down as a Type T2-SE-A2 tanker on 18 February 1944 under a Maritime Commission contract by the Marine Ship Corporation of Sausalito, California.

Operating under charter by Union Oil Company, she carried fuel and oil to US forces and Allies overseas, and continued in this duty after the Naval Transportation Service had been replaced by the Military Sea Transportation Service.

Reacquired by the Navy on 27 June 1956 she was placed in service with MSTS on the same date and served with them until returned to the Maritime Reserve Fleet at Olympia, on 19 September 1957.

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.