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German submarine ''U-457'' was a Type VIIC U-boat of Nazi Germany's ''Kriegsmarine'' during World War II. She carried out three patrols. She sank two ships and damaged one more. She was sunk northeast of the North Cape by a British warship, in September 1942. ==Design== German Type VIIC submarines were preceded by the shorter Type VIIB submarines. ''U-457'' had a displacement of when at the surface and while submerged. She had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of for use while surfaced, two Siemens-Schuckert GU 343/38–8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to . The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . ''U-457'' was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one , 220 rounds, and an anti-aircraft gun. The boat had a complement of between forty-four and sixty. 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「German submarine U-457」の詳細全文を読む スポンサード リンク
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