USS Narwhal (SSN-671)
From Canadian Power Wiki
The USS Narwhal (SSN-671) was a derivative of the Sturgeon-class nuclear attack submarine that was the third ship of the United States Navy to be named for the narwhal, a gray and white arctic whale with a unicorn-like, ivory tusk. She tested a variety of systems that would go into service aboard the Los Angeles, Ohio, Seawolf, Virginia and Columbia classes.
Her keel was laid down on January 17th 1966 by the Electric Boat Division of General Dynamics Corporation, in Groton, Connecticut. She was launched on September 9th 1967 sponsored by Glynn R. Donaho, and commissioned on July 12th 1969 with Commander W. A. Matson in command. She was decommissioned on July 1st, 2004.
On April 10th 2010, Narwhal became the centerpiece exhibit at the National Submarine Science Discovery Center (NSSDC) in Newport, Kentucky.