HMS R11

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R-class submarine
R-class submarine
Career
Name: HMS R11
Builder: Cammell Laird, Birkenhead
Laid down: 1 December 1917
Launched: 16 March 1918
Commissioned: 8 August 1919
Fate: Sold, 21 February 1923
General characteristics
Class and type: R class submarine
Displacement: 420 long tons (427 t) surfaced
500 long tons (508 t) submerged
Length: 163 ft (50 m)
Beam: 16 ft (4.9 m)
Draught: 11 ft 6 in (3.51 m)
Propulsion: 8-cylinder diesel engine, 480 hp (360 kW)
2 × electric motors, 1,200 hp (890 kW) total
Single electric motor for low speed running
One shaft
Speed: 9.5 knots (17.6 km/h) surfaced
14 knots (26 km/h) submerged
Endurance: Submerged: 1 hour at 14 knots (26 km/h)
Complement: 2 officers and 20 ratings
Sensors and
processing systems:
Bow hydrophone array
Armament: • 6 × 18 in (460 mm) torpedo tubes (forward)
• 12 × Mark VIII 18 inch torpedoes

HMS R11 was a British R class submarine built by Cammell Laird at Birkenhead. She was laid down on 1 December 1917 and launched on 16 March 1918. R11 was commissioned on 8 August 1919. She came too late to see any combat in World War I, like most of the other R class submarines. R11 was sold on 21 February 1923 to J Smith.

The ship's bell of R11 is held by the Royal Navy Submarine Museum at Gosport.

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