USS Mascoma (AO-83) was a Escambia-class replenishment oiler constructed for the United States Navy during World War II.

She served her country in the Pacific Ocean Theatre of Operations, and provided petroleum products where needed to combat ships.

On that morning, 20 November, Mississinewa (AO-59), moored near Mascoma, was rocked with explosions caused by a direct hit with a kaiten launched from the I-47.

On 10 July, Mascoma departed Ulithi to rendezvous with units of task group TG 38.1, then involved in attacks on the Japanese home islands.

On 24 October, the oiler departed for the United States, arriving on 26 November at Norfolk, Virginia, where she decommissioned on 17 December.

From that time through 1959 she served as a non-commissioned Naval vessel USNS Mascoma (T-AO-83), crewed by civilian personnel under contract to the Military Sea Transportation Service.

In that capacity, Mascoma continued her record of wartime support by serving off the Korean coast from 14 February 1954 through the signing of the Armistice on 27 July, remaining in the area until 13 August 1953.

She was struck from the Naval Vessel Register on 18 June 1959 and sold to Seatrain Lines Inc., for conversion to a containerized cargo ship.

The ship was sold to the Hudson Waterways Corporation on 4 November 1966 under the MARAD Exchange Program and renamed Seatrain Oregon.

Upon completion of the conversion she was sold to C.I.T. Corp. and began hauling containerized cargo for Seatrain Lines between U.S. west coast ports and Hawaii, Guam and other U.S. Pacific territories.