HMS Tetrarch (N77)

HMS Tetrarch (N77) was a T-class submarine of the Royal Navy. She was laid down by Vickers Armstrong, Barrow and launched in November 1939.

For other ships with the same name, see HMS Tetrarch.

HMS Tetrarch
History
United Kingdom
NameHMS Tetrarch
BuilderVickers Armstrong, Barrow
Laid down24 August 1938
Launched14 November 1939
Commissioned15 February 1940
IdentificationPennant number N77
FateSunk 2 November 1941
Badge
General characteristics
Class and typeBritish T class submarine
Displacement
  • 1,090 tons surfaced
  • 1,575 tons submerged
Length275 ft (84 m)
Beam26 ft 6 in (8.08 m)
Draught16.3 ft (5.0 m)
Propulsion
  • Two shafts
  • Twin diesel engines 2,500 hp (1.86 MW) each
  • Twin electric motors 1,450 hp (1.08 MW) each
Speed
  • 15.25 knots (28.7 km/h) surfaced
  • 9 knots (20 km/h) submerged
Range4,500 nautical miles at 11 knots (8,330 km at 20 km/h) surfaced
Test depth300 ft (91 m) max
Complement59
Armament
  • 6 internal forward-facing 21-inch (533 mm) torpedo tubes
  • 4 external forward-facing torpedo tubes
  • 6 reload torpedoes
  • 1 x 4-inch (102 mm) deck gun
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