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HMS ''Graph'' (pennant number P715) was a German Type VIIC U-boat which was captured and used by the British Royal Navy during World War II. Commissioned as the ''U-570'' in Nazi Germany's ''Kriegsmarine'' in mid-1941, she was attacked and captured on her first patrol. She provided both the Royal Navy and United States Navy with significant information on German submarines, and carried out three combat patrols with a Royal Navy crew, becoming the only U-boat to see active service with both sides during the war. She was withdrawn from service in 1944 due to problems maintaining her. While being towed to the breakers for scrapping, she ran aground on an island off the west coast of Scotland. Some of the wreck was removed as scrap but some wreckage remains there to the present day. ==Design and construction== The submarine was built to the German Type VIIC design. She had a displacement of when surfaced, and when submerged. The boat was long, with a beam of , and a draught of . The diesel-electric propulsion system provided a maximum speed of surfaced or submerged. The ''U-570'' had a fuel capacity of which gave a range of at .〔CB 4318 p. 4〕 The test depth of the submarine was .〔 The main armament consisted of five torpedo tubes; four in the bow, and the fifth in the stern. A total of 14 torpedoes could be carried – five in the torpedo tubes, seven reloads inside the pressure hull and a further two in water–tight canisters outside the pressure hull.〔 The boat was fitted with a 8.8cm C/35 deck gun (with around 150 rounds of ammunition) and a 2cm Flak 30 anti-aircraft gun.〔 A 28 cm Stereoscopic rangefinder was carried for use with the anti-aircraft gun,〔CB 4318 p. 26〕 and a number of machine guns were also carried.〔CB 4318 p. 5〕 ''U-570'' was laid down by Blohm & Voss at Hamburg on 21 May 1940. The submarine was launched on 20 March 1941. 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 Graph」の詳細全文を読む スポンサード リンク
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