History | |
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United Kingdom | |
Name | E12 |
Builder | HM Dockyard, Chatham |
Cost | £101,900 |
Laid down | 16 December 1912 |
Launched | 5 September 1914 |
Commissioned | 14 October 1914 |
Fate | Sold, 7 March 1921 |
General characteristics | |
Class and type | E-class submarine |
Displacement |
|
Length | 181 ft (55 m) |
Beam | 15 ft (4.6 m) |
Propulsion |
|
Speed |
|
Range |
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Complement | 30 |
Armament |
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HMS E12 was a British E class submarine built by HM Dockyard, Chatham. She was laid down on 16 December 1912 and commissioned on 14 October 1914. Her construction costs totalled £101,900.
During the Great War, anti-submarine nets in the Dardanelles entangled her forward hydroplanes, forcing her down to a depth of 245 feet. At the time, this was the greatest depth achieved by any British submarine.[ citation needed] E12 managed to surface only to come under fire by shore batteries, but avoided further damage. She survived the war and was sold for scrap in Malta on 7 March 1921. [1]
Like all post-E8 British E-class submarines, E12 had a displacement of 662 long tons (673 t) at the surface and 807 long tons (820 t) while submerged. She had a total length of 180 feet (55 m) [2] and a beam of 22 feet 8.5 inches (6.922 m). She was powered by two 800 horsepower (600 kW) Vickers eight-cylinder two-stroke diesel engines and two 420 horsepower (310 kW) electric motors. [3] [4] The submarine had a maximum surface speed of 16 knots (30 km/h; 18 mph) and a submerged speed of 10 knots (19 km/h; 12 mph). British E-class submarines had fuel capacities of 50 long tons (51 t) of diesel and ranges of 3,255 miles (5,238 km; 2,829 nmi) when travelling at 10 knots (19 km/h; 12 mph). [2] E12 was capable of operating submerged for five hours when travelling at 5 knots (9.3 km/h; 5.8 mph).
E12 was armed with a single 4-inch QF gun mounted forward of the conning tower, and five 18 inch (450 mm) torpedo tubes, two in the bow, one either side amidships, and one in the stern; a total of 10 torpedoes were carried. [3]
E-Class submarines had wireless systems with 1 kilowatt (1.3 hp) power ratings; in some submarines, these were later upgraded to 3 kilowatts (4.0 hp) systems by removing a midship torpedo tube. Their maximum design depth was 100 feet (30 m) although in service some reached depths of below 200 feet (61 m). Some submarines contained Fessenden oscillator systems. [2]
Her complement was three officers and 28 men. [2]