HMS Simoom (P225)

Simoom on the surface
History
United Kingdom
Name	Simoom
Ordered	2 September 1940
Builder	Cammell Laird, Birkenhead
Laid down	14 July 1941
Launched	12 October 1942
Commissioned	30 December 1942
Fate	Sunk, 4–19 November 1943
General characteristics
Class and type	S-class submarine
Displacement	865 long tons (879 t) (surfaced) 990 long tons (1,010 t) (submerged)
Length	217 ft (66.1 m)
Beam	23 ft 9 in (7.2 m)
Draught	14 ft 8 in (4.5 m)
Installed power	1,900 bhp (1,400 kW) (diesel) 1,300 hp (970 kW) (electric)
Propulsion	2 × diesel engines 2 × electric motors
Speed	15 kn (28 km/h; 17 mph) (surfaced) 10 kn (19 km/h; 12 mph) (submerged)
Range	6,000 nmi (11,000 km; 6,900 mi) at 10 knots (19 km/h; 12 mph) (surfaced); 120 nmi (220 km; 140 mi) at 3 knots (5.6 km/h; 3.5 mph)
Test depth	300 ft (91.4 m) (submerged)
Complement	48
Sensors and processing systems	Type 129AR or 138 ASDIC Type 291 early-warning radar
Armament	7 × 21 in (533 mm) torpedo tubes (6 × bow, 1 × stern) 1 × 3 in (76 mm) deck gun 1 × 20-millimetre (0.8 in) AA gun

HMS Simoom was a third-batch S-class submarine built for the Royal Navy during World War II. She was laid down on 14 July 1941 and launched on 12 October 1942.

After an initial patrol off Norway, Simoom sailed to Gibraltar, then to Algiers, French North Africa. From there, she conducted four patrols and attacked several ships, but only sank an Italian destroyer. Simoom then visited several ports in the eastern Mediterranean, then departed Port Said for a patrol off Turkey. She did not return from this patrol, and it is considered most likely that she hit a mine and sank. Her wreck was discovered in 2016 off Tenedos, Turkey.