HMS Trenchant (P331)

HMS Trenchant (P331) was a British T class submarine of the Second World War.

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

HMS Trenchant
History
United Kingdom
Laid down: 9 May 1942
Launched: 24 March 1943
Commissioned: 26 February 1944
Fate: Sold to be broken up for scrap on 1 July 1963. Scrapped at Faslane
Badge:
General characteristics
Class and type: British T class submarine
Displacement:
  • 1,290 tons surfaced
  • 1,560 tons submerged
Length: 276 ft 6 in (84.28 m)
Beam: 25 ft 6 in (7.77 m)
Draught:
  • 12 ft 9 in (3.89 m) forward
  • 14 ft 7 in (4.45 m) aft
Propulsion:
  • Two shafts
  • Twin diesel engines 2,500 hp (1.86 MW) each
  • Twin electric motors 1,450 hp (1.08 MW) each
Speed:
  • 15.5 knots (28.7 km/h) surfaced
  • 9 knots (20 km/h) submerged
Range: 4,500 nautical miles at 11 knots (8,330 km at 20 km/h) surfaced
Test depth: 300 ft (91 m) max
Complement: 61
Armament:
  • 6 internal forward-facing 21 inch (533 mm) torpedo tubes
  • 2 external forward-facing torpedo tubes
  • 2 external amidships rear-facing torpedo tubes
  • 1 external rear-facing torpedo tubes
  • 6 reload torpedoes
  • QF 4 inch (100 mm) deck gun
  • 3 anti aircraft machine guns

On completion she was given over to the crew of HMS Thrasher whose submarine was due for a refit.

Service

Trenchant under her captain Commander Arthur Hezlet, DSO, DSC acted in the Far East mostly off South East Asia against Japanese shipping sinking a range of vessels both transports and warships, using her torpedoes, gun and also by ramming. She often operated in company with her sister, HMS Terrapin.

On 23 September 1944 she sank the German submarine U-859 in the Straits of Malacca, by torpedoes. 11 of the crew were taken aboard as prisoners of war.

On 27 October 1944, "Chariots" carried into action by Trenchant sank a Japanese Army cargo ship, the Sumatra Maru in Phuket harbour, Siam.

Her most significant action during the war was on 8 June 1945, when she sank the Japanese cruiser Ashigara at a range of 4,000 yards with five out of eight torpedoes fired. The action in the Bangka Straits earned her commander a second DSO and the US Legion of Merit, and the ship the battle honour "Malaya 1944-45". The Ashigara had been carrying some 1,600 Japanese Army troops and materiel.

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References
    • British submarines of World War II
    • British submarines of World War II
    • Uboat.net
    • Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
    • Hutchinson, Robert (2001). Jane's Submarines: War Beneath the Waves from 1776 to the Present Day. London: HarperCollins. ISBN 978-0-00-710558-8. OCLC 53783010.


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