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German submarine U-721

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Title: German submarine U-721  
Author: World Heritage Encyclopedia
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Subject: 31st U-boat Flotilla, U-boats scuttled in 1945, U-boats commissioned in 1943, German Type VII submarines, German submarine U-691
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German submarine U-721

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German submarine U-721 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 16 November 1942 at the H. C. Stülcken Sohn yard at Hamburg, launched on 23 July 1943, and commissioned on 8 November 1943 under the command of Oberleutnant zur See Otto Wollschläger.


German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-721 had a displacement of when at the surface and while submerged. It 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. It had two shafts and two propellers. It 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, it could operate for at ; when surfaced, it could travel at . U-721 was fitted with five

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