USS Apollo (AS-25) was an Aegir-class submarine tender in the United States Navy.Apollo was laid down under a Maritime Commission contract (MC hull 860) on 24 June 1943 at Pascagoula, Mississippi, by the Ingalls Shipbuilding Corporation; launched on 6 November 1943; sponsored by Mrs. James B. Hill; and acquired by the Navy and simultaneously placed in commission on 31 December 1943, Commander Charles D.