SS Mission San Jose was a Type T2-SE-A2 tanker built for the United States Maritime Commission during World War II.

Mission San Jose was laid down 17 July 1943 under a Maritime Commission contract by Marine Ship Corporation, Sausalito, California; launched 7 October 1943; sponsored by Mrs. Robert L. Bridges and delivered 29 January 1944.

Upon completion of the conversion and delivery in 1967 Seatrain Ohio, IMO 6621234, was chartered to the MSTS in support of overseas U.S. military operations, including the transport of material, equipment and aircraft to Vietnam.

The ship was transferred to the National Defense Reserve Fleet (James River) in November 1973 and on 8 August 1978, her name was changed to just Ohio.

In 1990 Ohio was reactivated for service in support of the First Persian Gulf War and subsequently returned to the Reserve Fleet (Beaumont, Texas).