German submarine U-46

German submarine U-46 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II. She had a highly successful career during the war.German Type VIIB submarines were preceded by the shorter Type VIIA submarines. U-46 had a displacement of 753 tonnes when at the surface and 857 tonnes while submerged. She had a total length of 66.50 m , a pressure hull length of 48.80 m , a beam of 6.20 m , a height of 9.50 m , and a draught of 4.74 m . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower for use while surfaced, two BBC GG UB 720/8 double-acting electric motors producing a total of 750 metric horsepower for use while submerged. She had two shafts and two 1.23 m propellers. The boat was capable of operating at depths of up to 230 metres .

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