USS Seawolf

Four submarines of the United States Navy have borne the name USS Seawolf, named for a solitary fish with strong, prominent teeth and projecting tusks that give it a savage look.

The first USS Seawolf (SS-28) was renamed H-1, ran aground, and sank.

The second USS Seawolf (SS-197) was successful during World War II until she was lost, possibly sunk by friendly fire.

The third USS Seawolf (SSN-575) was the second nuclear submarine, and the only US submarine built with a liquid metal (sodium) nuclear reactor.

The fourth USS Seawolf (SSN-21) is the lead ship of her class.