Propeller from USS Seaworlf (SSN-575)

USS Seawolf (SSN-575), a unique submarine, was the third ship of the United States Navy to be named for the seawolf, was the second nuclear submarine, and the only U.S. submarine built with a liquid metal cooled (sodium) nuclear reactor.

Seawolf's keel was laid down 7 September 1953 by the Electric Boat division of General Dynamics Corporation in Groton, Connecticut. She was launched on 21 July 1955.

In April 1986, Seawolf conducted her last Western Pacific deployment and returned to Mare Island in June of 1986 to prepare for decommissioning. Decommissioned 30 March 1987, Seawolf was stricken from the Naval Vessel Register the following 10 July.