Laden with oil products, Chestatee cleared Baytown, Texas, 14 January 1945 for San Pedro Bay, Leyte, where she arrived 1 March for duty transporting high-octane gasoline among the Philippine Islands.

On 27 July, while underway for Brunei Bay, Borneo, Chestatee struck a mine in the straits south of Balabac Island; five of her men were killed, eight injured, including the commanding officer LT. William N. Ohly, and the ship was damaged by the explosion and resulting fire.

Repaired at Puerto Princesa, Palawan, and Samar, Chestatee returned to her Philippine operations until 20 November 1945, when she sailed from Leyte for San Francisco, California, which she reached 13 January.

A second tour of service with MSTS began in April 1956 and continued until 8 November 1956 when Chestatee transferred to the Suisun Bay branch of the National Defense Reserve Fleet.

[2] Chestatee was transferred by the Air Force to the Olympia, Washington (USA), branch of the National Defense Reserve Fleet on 14 September 1962 and was stricken from the Naval Vessel Register on 1 June 1963.