German submarine U-1011 was a Type VIIC/41 U-boat ordered by Nazi Germany's Kriegsmarine during World War II. Laid down on 12 March 1943, at Blohm & Voss, Hamburg, as yard number 211, the incomplete submarine fell victim to an RAF bombing raid on 25 July 1943. Planned repair work was cancelled on 22 July 1944.
Design German Type VIIC/41 submarines were preceded by the heavier Type VIIC submarines. U-1011 had a displacement of when at the surface and while submerged. She had a total length of , a pressure hull length of , an overall 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 BBC 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-1011 was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes or 26 TMA or TMB Naval mines, one Flak M42 and two C/30 anti-aircraft guns. The boat had a complement of between forty-four and fifty-two.
See also Battle of the Atlantic
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