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German submarine U-703
German submarine ''U-703'' was a Type VIIC U-boat of Nazi Germany's ''Kriegsmarine'' deployed during the Second World War against allied shipping in the Arctic Ocean. She was a successful boat, which had a far longer service life than most other U-boats, primarily due to the restricted zone of operations in which she fought. Her main mission during the war was to target the Arctic Convoys which carried supplies to the Soviet Union from Britain. At this she was quite successful in her three years of raiding until her presumed demise in 1944.
''U-703'' was built at Hamburg in Northern Germany on the North Sea. She was completed in the autumn of 1941, and given to the experienced ''Kapitänleutnant'' Heinz Bielfeld to command. He took her on her working-up period in which the boat was tested and the crew trained in the Baltic Sea and around the German held coastlines, before being dispatched to Narvik in Norway for her first war patrol in April 1942.
==Design==
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. ''U-381'' 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 Garbe, Lahmeyer & Co. RP 137/c 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-702'' 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）』
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