TANG - class Attack Submarines
as build
Displacement: 1560 tons (surf.),2260 tons (subm.)
Dimensions: 268-ft x 27-ft x 17-ft

In 1957/58 each of the first four boats were stretched to 277 feet.
(Gudgeon and Harder were built to a length of 277 feet with FM engines)

Displacement: 2050 tons (surf.), 2700 tons (subm.)
Dimensions: 287-ft x 27-ft x 17-ft with Puffs and Fairbanks

Armament: 8- 21 in torpedo tubes (6 fwd- 2 aft)
Propulsion: twin shaft, electric motor,
(GM 16-338 "pancake" engine)
Replaced by Fairbanks 38D8-1/8 O.P.
Speed. 15.5k (surf.), 18.3k (subm.)  Test Depth. 700';
   Complement. 8 officers - 75 enlisted men;


USS TANG (SS563)
Built by; Portsmouth Navy Yard
Laid down; 18 April 1949 - Launched; 19 June 1951- Commissioned; 25 October 1951




USS TRIGGER (SS-564)
Built By: Electric Boat
Laid down; 24 February 1949 - Launched: 3 December 1951 - Commissioned 31 March 1952



USS WAHOO (SS 565)
Built by; Portsmouth Navy Yard
Laid down; 24 October 1949 - Launched; 16 October 1951- Commissioned; 30 May 1952



USS TROUT (SS-566)
Built By: Electric Boat
Laid down; 1 December 1949 - Launched: 21 August 1951 - Commissioned 27 June 1952


USS GUDGEON (SS 567)
Built by; Portsmouth Navy Yard
Laid down; 20 May 1950 - Launched; 11 May 1952- Commissioned; 21 November 1952


USS HARDER (SS-568)
Built By: Electric Boat
Laid down; 20 June 1950 - Launched: 14 June 1951 - Commissioned 19 August 1952

DARTER -class Attack Submarines
(Improved Tang - Class)

Displacement: 1871 tons (surf.), 2372 tons (subm.);
Dimensions: 268.7'x. 27'3";
                     Speed 15.5k (surf.), 16k (subm.) Test Depth. 700';
Armament: 8- 21 in torpedo tubes (6 fwd- 2 aft)
Propulsion: twin shaft, electric motor,
     Complement. 8 officers - 75 enlisted men;


USS DARTER (SS-576)

Built By: Electric Boat
Laid down; 10 November 1954 - Launched: 28 May 1956 - Commissioned 26 October 1956



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