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HMS ''A2'' was an submarine built for the Royal Navy in the first decade of the 20th century. ==Design and description== ''A2'' was a member of the first British class of submarines, although slightly larger, faster and more heavily armed than the lead ship, . The submarine had a length of overall, a beam of and a mean draft of . They displaced on the surface and submerged. The A-class submarines had a crew of 2 officers and 11 ratings.〔Gardiner & Gray, p. 86〕 For surface running, the boats were powered by a single 16-cylinder Wolseley petrol engine that drove one propeller shaft. When submerged the propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, ''A2'' had a range of at ;〔 submerged the boat had a range of at .〔Akermann, p. 120〕 The boats were armed with two 18-inch (45 cm) torpedo tubes in the bow. They could carry a pair of reload torpedoes, but generally did not as doing so that they had to compensate for their weight by an equivalent weight of fuel.〔Harrison, Chapter 27〕 ==Construction and career== Like all boats in her class, she was built at Vickers, Barrow-in-Furness. She was launched on 15 April 1903. During World War I, ''A2'' served on harbour service at Portsmouth. She flooded after running aground in Bomb Ketch Lake, Portsmouth harbour in January 1920 and was sold for scrap to H. G. Pound of Portsmouth on 22 October 1925. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「HMS A2」の詳細全文を読む スポンサード リンク
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