USS Narwhal (SSN-671)
Vessel
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USS Narwhal (SSN-671), a unique submarine, was the third vessel of the United States Navy to be named for the narwhal, a gray and white arctic whale with a unicorn-like, ivory tusk.
Her keel was laid down on 17 January 1966 by the Electric Boat... Wikipedia
Launched: September 9, 1967
Builder: General Dynamics Electric Boat
Length: 314′
Decommissioned: 1 July 1999
Laid down: 17 January 1966
Propulsion: 1 × S5G pressurized water reactor; 1 × steam turbine, 17,000 shp (13,000 kW); 1 shaft;