American submarine NR-1

*NR-1*
	Deep submergence vessel NR-1
History
United States
Name	NR-1
Builder	General Dynamics Electric Boat
Laid down	10 June 1967
Launched	25 January 1969
In service	27 October 1969
Out of service	21 November 2008
Motto	The World's Finest Deep Submersible
Nickname(s)	Nerwin
Fate	Scrapped
General characteristics
Class & type	Unique submarine
Displacement	400 tons
Length	45 m (147 ft 8 in) overall; 29.3 m (96 ft 2 in) pressure hull;
Beam	3.8 m (12 ft 6 in); 4.8 m (15 ft 9 in) at stern stabilizers.;
Draft	4.6 m (15 ft 1 in); Box keel depth (below base-line): 1.2 m (3.9 ft);
Installed power	Single nuclear reactor, one turbine generator
Propulsion	2 × external motors; 2 × propellers; 4 × ducted thrusters (mounted diagonally in two "x-configured" pairs);
Speed	4.5 knots (8.3 km/h; 5.2 mph) surfaced; 3.5 knots (6.5 km/h; 4.0 mph) submerged;
Endurance	210-man-days nominal; 16 days for a 13 person crew; 330-man-days maximum; 25 days for a 13 person crew;
Test depth	3,000 feet (910 m)
Complement	3 officers, 8 crewmen, 2 scientists

Deep Submergence Vessel NR-1 was a unique United States Navy nuclear-powered ocean engineering and research submarine built by the Electric Boat Division of General Dynamics at Groton, Connecticut. NR-1 was launched on 25 January 1969, completed initial sea trials 19 August 1969, and was home-ported at Naval Submarine Base New London. She was the smallest nuclear submarine ever put into operation, casually known as "Nerwin" and never officially named or commissioned. The U.S. Navy is allocated a specific number of warships by Congress, but Admiral Hyman Rickover avoided using one of those allocations for the construction of NR-1 in order to circumvent the oversight that a warship receives from various bureaus.