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German submarine U-1021
German submarine ''U-1021'' was a Type VIIC/41 U-boat of Nazi Germany's ''Kriegsmarine'' during World War II.
Laid down on 6 May 1943 at the Blohm & Voss yard in Hamburg, the submarine was launched on 13 April 1944, and commissioned on 25 May 1944, under the command of ''Oberleutnant zur See'' William Holpert.
==Design==
German Type VIIC/41 submarines were preceded by the heavier Type VIIC submarines. ''U-1021'' 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 Brown, Boveri & Cie GG UB 720/8 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-1021'' 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.
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