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{{other ships|HMS Trenchant}}{{Use dmy dates|date=March 2017}}{{Use British English|date=March 2017}}{{Infobox ship image| Ship image=HMS Trenchant.jpg | Ship caption=HMS Trenchant
}}{{Infobox ship career | Hide header= | Ship country=United Kingdom | United Kingdom|naval}} | Ship name= | Ship namesake= | Ship owner= | Ship operator= | Ship registry= | Ship route= | Ship ordered= | Ship awarded= | Ship builder= | Ship original cost= | Ship yard number= | Ship way number= | Ship laid down=9 May 1942 | Ship launched=24 March 1943 | Ship sponsor= | Ship christened= | Ship completed= | Ship acquired= | Ship commissioned=26 February 1944 | Ship recommissioned= | Ship decommissioned= | Ship maiden voyage= | Ship in service= | Ship out of service= | Ship renamed= | Ship reclassified= | Ship refit= | Ship struck= | Ship reinstated= | Ship homeport= | Ship identification= | Ship motto= | Ship nickname= | Ship honours= | Ship honors= | Ship captured= | Ship fate=Sold to be broken up for scrap on 1 July 1963. Scrapped at Faslane | Ship status= | Ship notes= | Ship badge=
}}{{Infobox ship characteristics | Hide header= | Header caption= | Ship class=British T class submarine | Ship type= | Ship tonnage= | Ship displacement=*1,290 tons surfaced | Ship tons burthen= | 276|ft|6|in|m|abbr=on}} | 25|ft|6|in|m|abbr=on}} | Ship height= | 12|ft|9|in|m|abbr=on}} forward- {{convert|14|ft|7|in|m|abbr=on}} aft
| Ship draft= | Ship depth= | Ship hold depth= | Ship decks= | Ship deck clearance= | Ship ramps= | Ship ice class= | Ship power= | Ship propulsion=*Two shafts- Twin diesel engines 2,500 hp (1.86 MW) each
- Twin electric motors 1,450 hp (1.08 MW) each
| Ship sail plan= | Ship speed=*15.5 knots (28.7 km/h) surfaced- 9 knots (20 km/h) submerged
| Ship range=4,500 nautical miles at 11 knots (8,330 km at 20 km/h) surfaced | Ship endurance= | 300|ft|m|abbr=on}} max | Ship boats= | Ship capacity= | Ship troops= | Ship complement=61 | Ship crew= | Ship time to activate= | Ship sensors= | Ship EW= | Ship 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
| Ship armour= | Ship armor= | Ship aircraft= | Ship aircraft facilities= | Ship notes=
}} | HMS Trenchant (P331) was a British T class submarine of the Second World War. On completion she was given over to the crew of HMS Thrasher whose submarine was due for a refit. ServiceTrenchant 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. References- [https://web.archive.org/web/20070429123553/http://home.cogeco.ca/~gchalcraft/sm/page23.html British submarines of World War II]
- [https://web.archive.org/web/20070501153451/http://home.cogeco.ca/~gchalcraft/sm/trenchant.html British submarines of World War II]
- Uboat.net
- {{Colledge}}
- {{cite book | last = Hutchinson | first = Robert | title = Jane's Submarines: War Beneath the Waves from 1776 to the Present Day | year = 2001 | location = London | publisher = HarperCollins | isbn = 978-0-00-710558-8 | oclc = 53783010 }}
External links- http://www.royalnavy.mod.uk/server/show/nav.2558
{{T class submarine}}{{DEFAULTSORT:Trenchant (P331)}} 5 : British T-class submarines of the Royal Navy|Ships built in Chatham|1943 ships|World War II submarines of the United Kingdom|Cold War submarines of the United Kingdom |