DSRV-1 Mystic

DSRV-1 Mystic is a deep-submergence rescue vehicle that is rated to dive up to 5,000 feet (1,500 m). It was built by Lockheed for the US Navy at a construction cost of $41 million and launched 24 January 1970.^[1] It was declared fully operational in 1977 and named Mystic.^[2]

DSRV-1 (Mystic) docked to a Los Angeles-class attack submarine.
History
United States
Name	Official: DSRV-1 Unofficial: Mystic
Namesake	The village of Mystic, Connecticut
Builder	Lockheed Missiles and Space Company, Sunnyvale, California
Launched	24 January 1970
Acquired	1 June 1970
Out of service	1 October 2008
General characteristics
Class and type	DSRV-1- (Mystic-) class deep submergence rescue vehicle
Displacement	30.5 tons surfaced, 37 tons submerged
Length	49 ft (15 m)
Beam	8 ft (2.4 m); Width 11 ft (3.4 m)
Installed power	15 shaft horsepower (11.2 kilowatt)
Propulsion	Electric motors, silver-zinc batteries, one shaft, four thrusters
Speed	4 knots (7.4 km/h; 4.6 mph)
Endurance	30 hours submerged at 3 knots (5.6 km/h)
Test depth	5,000 feet (1,500 m)
Capacity	24 passengers
Complement	Four (two pilots and two rescue personnel)

The submarine was intended to be air transportable; it was 50 feet (15 m) long and 8 feet (2.4 m) in diameter, and it weighed 37 tons. The sub was capable of descending to 5,000 feet (1,500 m) below the surface and could carry 24 passengers at a time, in addition to its crew. It was stationed at Naval Air Station North Island in San Diego and was never required to conduct an actual rescue operation. Mystic was replaced by the SRDRS on September 30, 2008, and began deactivation on October 1, 2008.^[3] In October 2014, the submarine was donated to the Naval Undersea Museum,^[4] and restored in February 2021.^[5]