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HMS H11

Submarine of the Royal Navy From Wikipedia, the free encyclopedia

HMS H11
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HMS H11 was a British H-class submarine built by Fore River Yard, Quincy, Massachusetts. She was laid down on an unknown date and was commissioned in 1915. H11 along with HMS H12 to HMS H20 were all built in America but were interned by the United States government until the United States entered World War I. H11 was sold on 20 October 1920 in Dover and lost on tow to the breaker's yard. The wreck was identified 2007.

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Like all pre-H21 British H-class submarines, H11 had a displacement of 364 long tons (370 t) at the surface and 434 long tons (441 t) while submerged.[1] It had a total length of 150 feet 3 inches (45.8 m), a beam of 15 feet 4 inches (4.67 m), and a draught of 12 feet (3.7 m).[2] It contained a diesel engines providing a total power of 480 horsepower (360 kW) and two electric motors each providing 320 horsepower (240 kW) power.[2] The use of its electric motors made the submarine travel at 11 knots (20 km/h; 13 mph). It would normally carry 16.4 long tons (16.7 t) of fuel and had a maximum capacity of 18 long tons (18 t).[3]

The submarine had a maximum surface speed of 13 knots (24 km/h; 15 mph) and a submerged speed of 11 knots (20 km/h; 13 mph). British H-class submarines had ranges of 1,600 nautical miles (3,000 km; 1,800 mi) at speeds of 10 knots (19 km/h; 12 mph).[1] H11 was fitted with a 6 pounds (2.7 kg) Hotchkiss quick-firing gun (6-pounder) and four 18 inches (460 mm) torpedo tubes. Its torpedo tubes were fitted to the bows and the submarine was loaded with eight 18 inches (460 mm) torpedoes.[1] It is a Holland 602 type submarine but was designed to meet Royal Navy specifications. Its complement was twenty-two crew members.[1]

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