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USS Turbot (SS-427)
USS Turbot (SS-427), circa 1950
The partially completed hulk of USS Turbot.
Career (United States) US flag 48 stars.svg
Name: USS Turbot
Namesake: The turbot
Builder: Cramp Shipbuilding Company, Philadelphia, Pennsylvania
Laid down: 13 November 1943
Launched: as incomplete hulk 12 April 1946
Completed: Never
Commissioned: Never
Struck: 1958
Fate: Construction contract cancelled 12 August 1945
Notes: Served as testing hulk; survived as such into the 1980s
General characteristics
Class & type: Balao class diesel-electric submarine[1]
Displacement: 1,526 long tons (1,550 t) surfaced,[1] 2,414 long tons (2,453 t) submerged[1]
Length: 311 ft 9 in (95.02 m)[1]
Beam: 27 ft 3 in (8.31 m)[1]
Draft: 16 ft 10 in (5.13 m) maximum[1]
  • 4 × General Motors Model 16-248 V16 diesel engines driving electrical generators[2][3]
  • 2 × 126-cell Sargo batteries[4]
  • 4 × high-speed General Electric electric motors with reduction gears[2]
  • two propellers [2]
  • 5,400 shp (4.0 MW) surfaced[2]
  • 2,740 shp (2.0 MW) submerged[2]
Speed: 20.25 kn (37.50 km/h) surfaced,[5] 8.75 kn (16.21 km/h) submerged[5]
Range: 11,000 nmi (20,000 km) surfaced @ 10 kn (19 km/h)[5]
Endurance: 48 hours @ 2 kn (3.7 km/h) submerged,[5] 75 days on patrol
Test depth: 400 ft (120 m)[5]
Complement: 10 officers, 70–71 enlisted[5]

USS Turbot (SS-427), a Balao-class submarine, was the second ship of the United States Navy to be named for the turbot, a large, brown and white flatfish, valued as a food.

Turbot's keel was laid down on 13 November 1943 at Philadelphia, Pennsylvania, by the Cramp Shipbuilding Company, but the contract for her construction was cancelled on 12 August 1945. Her partially completed hulk was launched on 12 April 1946 and, in 1950, was assigned to the Naval Ship Research and Development Center at Annapolis, Maryland, where it was used for research and development in connection with the control and reduction of machinery noise in submarines.

Turbot was stricken from the Naval Vessel Register in 1958, and sold for scrapping to the Bethlehem Steel Corporation, at Sparrow's Point, Maryland; however, rather than being scrapped, she remained tied up to a U.S. Navy pier in Carr's Creek at the North Severn Naval Station in Maryland, where she continued to be used for testing well into the 1980s. Some material was removed from her hulk for use in other submarines, and her six torpedo air flasks were installed in the submarine USS Pampanito (SS-383) in San Francisco, California.


  1. Cite error: Invalid <ref> tag; no text was provided for refs named Register
  2. 2.0 2.1 2.2 2.3 2.4 Bauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775–1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 275–280. ISBN 978-0-313-26202-9. 
  3. U.S. Submarines Through 1945 p. 261
  4. 4.0 4.1 4.2 U.S. Submarines Through 1945 pp. 305–311
  5. 5.0 5.1 5.2 5.3 5.4 5.5 U.S. Submarines Through 1945 pp. 305-311

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