Avalon (DSRV-2) aboard a support ship.
United States
  • Official: DSRV-2
  • Unofficial: Avalon
BuilderLockheed Missiles and Space Company, Sunnyvale, California
Out of service2000
General characteristics
Class and typeDSRV-1- (Mystic-) class deep submergence rescue vehicle
Displacement30.5 tons surfaced, 37 tons submerged
Length49 ft (15 m)
Beam8 ft (2.4 m); Width 11 ft (3.4 m)
Installed power15 shaft horsepower (11 kW)
PropulsionElectric motors, silver-zinc batteries, one shaft, four thrusters
Speed4 knots (7.4 km/h; 4.6 mph)
Endurance30 hours submerged at 3 knots (5.6 km/h)
Test depth5,000 feet (1,500 meters)
Capacity24 passengers
ComplementFour (two pilots and two rescue personnel)

DSRV-2 Avalon was a Mystic-class deep-submergence rescue vehicle rated to dive up to 5,000 feet (1,500 m) to rescue submarine crews trapped deep under the sea. The submarine was acquired in response to the loss of the USS Thresher, so that the Navy would have a way to rescue trapped submarine crews.[1]

Avalon at Morro Bay

Avalon was launched in 1971. The submarine, intended to be air transportable, is 50 feet (15 m) long, 8 feet (2.4 m) in diameter, and weighs 37 tons. The sub is capable of descending to 5,000 feet (1,500 m) below the surface and could carry 24 passengers at a time in addition to her crew. Avalon is battery-powered, and would have needed to pause midway through a rescue mission to recharge its batteries.[1]

Avalon was stationed at North Island Naval Station in San Diego and was never required to conduct an actual rescue operation. The sub was decommissioned in 2000. The Avalon submarine was donated to the Morro Bay Maritime Museum in Morro Bay, California, and is currently on public display.[2]


See also


  1. ^ a b Liewer, Steve (6 March 2009). "Goodbye to Mystic minisub, hello to Falcon". San Diego Union-Tribune. Retrieved 4 May 2019.
  2. ^ "The Fleet - Morro Bay". Morro Bay Maritime Museum. 21 December 2017. Retrieved 20 April 2019.

35°22.202′N 120°51.309′W / 35.370033°N 120.855150°W / 35.370033; -120.855150