The ship, a Type T2-SE-A3 tanker, was completed as SS Mission Los Angeles and delivered after the end of World War II.

The tanker was acquired by the U.S. Navy in 1948 as USS Mission Los Angeles (AO-117), but was transferred to the Military Sea Transport Service upon its creation in 1949.

Conecuh was laid down on 25 April 1945 as a type T2-SE-A3 tanker under a Maritime Commission contract by the Marinship Corporation of Sausalito, California, but launched as Mission Los Angeles on 10 August 1945, sponsored by Mrs. Daniel J. Johnston.

Absorbed into the new Military Sea Transportation Service (MSTS) on 1 October 1949 she was designated USNS Mission Los Angeles (T-AO-117) and continued her services in support of the fleet until 12 November 1957 when she was struck from the Naval Vessel Registers and returned to the Maritime Administration to be laid up in the Maritime Reserve Fleet at Beaumont.

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