USS Narwhal (SSN-671)
USS Narwhal (SSN-671), a unique submarine, was the third ship of the United States Navy to be named for the narwhal, a gray and white arctic whale.
Her keel was laid down on 17 January 1966 by the Electric Boat Division of General Dynamics Corporation, in Groton, Connecticut. She was launched on 9 September 1967 sponsored by Glynn R. Donaho, and commissioned on 12 July 1969 with Commander W. A. Matson in command.