USS Seawolf (SSN-575)

USS Seawolf (SSN-575)
Seawolf (SSN-575) is seen departing San Francisco Bay in August 1977.
Class overview
BuildersElectric Boat division of General Dynamics Corporation, Groton, Connecticut
Operators United States Navy
Preceded byUSS Nautilus
Succeeded by
Built1953
In commission1957–1987
History
United States
Awarded21 July 1952
BuilderElectric Boat division of General Dynamics Corporation in Groton, Connecticut
Laid down7 September 1953
Launched21 July 1955
Sponsored byMrs. W. Sterling Cole
Commissioned30 March 1957
Decommissioned30 March 1987
Stricken10 July 1987
FateDisposed of by submarine recycling 30 September 1997
General characteristics
TypeSubmarine
Displacement
  • 3,260 tons surfaced
  • 4,150 tons submerged
Length
  • 337 ft (103 m)
  • 387 ft (118 m) post conversion
Beam28 ft (8.5 m)
Draft23 ft (7.0 m)
PropulsionS2G, replaced by S2Wa in 1960, geared steam turbines, two shafts, approx. 15,000 shp (11,000 kW)[1]
Speed
  • 23 knots (43 km/h; 26 mph) (43 km/h) surfaced,
  • 19 knots (35 km/h; 22 mph) submerged
Complement101 officers and enlisted
Armament6 × 21-inch (533 mm) torpedo tubes

USS Seawolf (SSN-575) was the third ship of the United States Navy to be named for the seawolf, the second nuclear submarine, and the only US submarine built with a liquid metal cooled (sodium), beryllium-moderated[2][3] nuclear reactor, the S2G.[4] Her overall design (known as SCB 64A) was a variant of Nautilus, but with numerous detail changes, such as a conning tower, stepped sail, and the BQR-4 passive sonar mounted in the top portion of the bow instead of further below. This sonar arrangement resulted in an unusual bow shape above the water for a U.S. submarine. Originally laid down in 1953, her distinctive reactor was later replaced with a standard pressurized water reactor, the replacement process lasting from 12 December 1958 to 30 September 1960.[5]

  1. ^ Gardiner, Robert and Chumbley, Stephen, Conway's All the World's Fighting Ships 1947–1995, p. 604, Conway Maritime Press, London:1995, ISBN 1-55750-132-7.
  2. ^ Lobner, Peter (July 2018). "Marine Nuclear Power: 1939–2018 – Part 2A: United States – Submarines" (PDF). The Lyncean Group of San Diego. Retrieved 29 August 2024.
  3. ^ Stehn, J. R., ed. (26 March 1964). "Naval Reactors Physics Handbook: The physics of intermediate spectrum ractors".
  4. ^ Trakimavičius, Lukas. "The Future Role of Nuclear Propulsion in the Military" (PDF). NATO Energy Security Centre of Excellence. Retrieved 15 October 2021.
  5. ^ Friedman, Norman (1994). U.S. Submarines Since 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. p. 106. ISBN 1-55750-260-9.