Artist's cutout of the NR-1 descending to the ocean floor.  Courtesy of fas.org.

NR-1 Class Submersible Research Vehicle:
Laid down: 10 June 1967 at the Electric Boat Division of General Dynamics Corp., Groton, CT.; Launched: 25 January 1969;
Delivered: to the US Navy and placed in service as NR-1, 22 October 1969. NR-1 was be towed by
USNS Grasp to Portsmouth Naval Shipyard in Kittery, Maine for the inactivation process in December 2009. The Boat was then towed to Puget Sound Naval Shipyard.
Specifications: Displacement: Surfaced, 365 t., Submerged, 393 t.; Length: 145'; Beam: 12'; Draft: 15';
Speed: Surfaced, 4.5 kts, Submerged, 3.5 kts; Complement: 2 officer, 3 enlisted, 2 scientists;
Armament: none; Operating Depth: 2,375 feet (724 meters); Propulsion: pressurized-water reactor, single propellers.  NavSource
Through the 1970s and 1980s, "NR-1" conducted numerous classified missions involving recovery of objects from the floor of the deep-sea. These missions remain classified and few details have been made public. One publicly acknowledged mission in 1976 was to recover parts of an F-14 that was lost from the deck of an aircraft carrier and sank with at least one of the then-new AIM-54A Phoenix air-to-air missiles. The secrecy normal to USN submarine operations was hightened by Rickover's personal involvement. Rickover shared details of "NR-1" operations on a need-to-know basis. Rickover envisioned building a small fleet of NR-1 type submarines, but only one was built due to budget restrictions.
Wikipedia
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Support Ship:  MV Carolyn Chouest
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NR-1 To Become Museum Boat ????

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NR-1, at Port Canaveral, Florida, 1 Feb 1986 
USN photo by JOC Sundberg, courtesy of courtesy of dodmedia.osd.mil, Defense Visual Information Center.6

Cutout of NR-1
 
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