Thermopylae (P355)

Built By:	Chatham Dockyard (Medway)
Build Group:	T Group 3
Fate:	Scrapped in July 1970 at Troon.

Thermopylae and Token

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Events

26-10-1943 :	Laid Down
27-06-1945 :	Launched

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Boats In Class

Official

T Group 3 Specification

Length overall	273' 6"
Beam	26' 6"
Depth	14' 3"
Displacement	1422 tons (surface)
	1571 tons (submerged)
Diving Depth	(i) 300'
Speed	Surface 15.25 knots (design)
	Surface 15.25 knots (service)
	Submerged 9 knots (design)
	Submerged 8.75 knots (service)
No. of shafts	2
Endurance	Surface: 7500 miles at 15.25 knots (design)
	(ii) Surface: 8000 miles at 10 knots (service)
	Submerged: 80 miles at 4 knots (design)
	Submerged: 80 miles at 4 knots (service)
Armament	8 21" bow tubes (2 external)
	2 21" amidship tubes
	(17 torpedoes carried)
	1 4" gun
	1 20mm Oerlikon cannon
	3 0.303" machine-guns
Complement	61
Notes	(i) This was increased to 350 feet in the all-welded boats.
	(ii) T Class submarines serving in the Far East were modified to carry extra fuel, which increased endurance to 11 000 miles at 10 knots.

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