USS Sapelo (AO 11): Maritime Commission, Naval Vessel Register

USS Sandusky (1865): United States Maritime Commission, Naval Vessel Register

USS Sapphire (PYc 2): Patrol Boat, Maritime Commission, Naval Vessel Register

USS Sappho (AKA 38): Artemis Class Attack Cargo Ship, Maritime Commission, Naval Vessel Register

USS Santa Fe (SSN 763): General Dynamics Electric Boat, Maritime Commission, Naval Vessel Register