| 翻訳と辞書 | HMS A12 
 HMS ''A12'' was an  submarine built for the Royal Navy in the first decade of the 20th century. After surviving World War I, she was sold for scrap in 1920.
 ==Design and description==
 ''A12'' 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, ''A12'' 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 they would have to remove an equal weight of fuel in compensation.〔Harrison, Chapter 27〕
 
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