HMS Terrapin (P323)

300px HMS Terrapin
History
United Kingdom
Builder:	Vickers Armstrong, Barrow Belliss and Morcom Ltd.
Laid down:	19 October 1942
Launched:	31 August 1943
Commissioned:	22 January 1944
Fate:	damaged by depth charges, scrapped June 1946
Badge:	90px
General characteristics
Class & 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 torpedo tubes 2 external forward-facing torpedo tubes 2 external amidships rear-facing torpedo tubes 1 external rear-facing torpedo tubes 6 reload torpedoes 4 inch (100 mm) deck gun 3 anti aircraft machine guns

HMS Terrapin was a British submarine of the third group of the T class. She was built as P323 by Vickers Armstrong, Barrow and Belliss and Morcom Ltd, and launched on 31 August 1943. So far she has been the only ship of the Royal Navy to bear the name Terrapin, after the animal of that name.

Service

Apart from a brief period in home waters off the Scandinavian coast, Terrapin served in the Far East for much of her wartime career. She had a comparatively active career, since she was only commissioned on 22 January 1944. In March 1944 she attacked a German convoy off Egersund, Norway, torpedoing and damaging the German catapult ship Schwabenland, and the German tanker Wörth, (the former Dutch Omala). The Schwabenland was grounded to prevent her from sinking and the Wörth was towed to port.

Terrapin was then assigned to the Pacific Far East in mid 1944. She opened her career by bombarding Japanese installations at Gunung Sitoli (Nias Island), western Sumatra. She also sank a Japanese coaster with gunfire and damaged another. She went on to sink the Japanese auxiliary netlayer Kumano Maru, the Japanese minesweeper W 5, and ten Japanese sailing vessels, damaging another.

Terrapin often operated with her sister, HMS Trenchant, and together they sank the Japanese tanker Yaei Maru No.6, the Japanese auxiliary minesweeper Reisui Maru, the Japanese submarine chaser Ch 8, a fishing vessel and seven coasters. Terrapin herself sank another small craft with gunfire.

She was damaged on 19 May 1945 by depth charges from Japanese escort vessels while attacking an escorted tanker. She escaped and returned to Fremantle, Australia. She was declared a constructive total loss on return to harbour, and was scrapped in June 1946.