USNS Mission Santa Ana (T-AO-137)

USNS Mission Santa Ana (T-AO-137)

USNS Mission Santa Ana (T-AO-137) was a Mission Buenaventura-class oiler that served in the United States Navy. The ship was originally intended as USS Concho (AO-102) for the U.S. Navy but her acquisition was canceled. The ship, a Type T2-SE-A3 tanker, was completed as SS Mission Santa Ana and delivered after the end of World War II. The tanker was acquired by the U.S. Navy in 1948 as USS Mission Santa Ana (AO-137), but was transferred to the Military Sea Transport Service upon its creation in 1949. The ship was named for the Santa Ana Estancia (a station of Mission San Juan Capistrano, one of the twenty-one California missions), she was the only U.S. Naval Vessel to bear the name.