German submarine U-441
1941 Type VIIC submarine
German submarine U-441 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II, which served for a short time as an anti-aircraft submarine under the designation U-flak 1.
The submarine was laid down on 15 October 1940 at the Schichau-Werke in Danzig as yard number 1492, launched on 13 December 1941 and commissioned on 21 February 1942, under the command of Kapitänleutnant Klaus Hartmann.
U-441 first served with the 5th U-boat Flotilla, a training unit, and then operationally with the 1st flotilla from 1 October 1942. She was lost on 30 June 1944.
Design
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-441 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). 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 (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two AEG GU 460/8–27 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).
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