Name U-11 Yard number 545 Commissioned 21 September 1935 Construction started 6 May 1935 Length 43 m Beam 4.08 m | Ordered 20 July 1934 Laid down 6 May 1935 Struck 5 January 1945, Kiel Launched 27 August 1935 Draft 3.9 m | |
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Builder Friedrich Krupp Germaniawerft Part of Kriegsmarine, 5th U-boat Flotilla, 21st U-boat Flotilla, 22nd U-boat Flotilla | ||
German submarine U-11 was a Type IIB U-boat built before World War II for service in Nazi Germany's Kriegsmarine. She was commissioned on 21 September 1935, with Kapitänleutnant Hans-Rudolf Rösing in command. She served in several training flotillas in her 10-year career, but sank or damaged no ships.
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U-11 was the first to carry out sea trials in 1940 of a new anechoic tile, which was developed by the Kriegsmarine to reduce a submarines' acoustic signature. It was codenamed Alberich after the invisible sorcerer from Germanic Mythology.
Design
German Type IIB submarines were enlarged versions of the original Type IIs. U-11 had a displacement of 279 tonnes (275 long tons) when at the surface and 328 tonnes (323 long tons) while submerged. Officially, the standard tonnage was 250 long tons (250 t), however. The U-boat had a total length of 42.70 m (140 ft 1 in), a pressure hull length of 28.20 m (92 ft 6 in), a beam of 4.08 m (13 ft 5 in), a height of 8.60 m (28 ft 3 in), and a draught of 3.90 m (12 ft 10 in). The submarine was powered by two MWM RS 127 S four-stroke, six-cylinder diesel engines of 700 metric horsepower (510 kW; 690 shp) for cruising, two Siemens-Schuckert PG VV 322/36 double-acting electric motors producing a total of 460 metric horsepower (340 kW; 450 shp) for use while submerged. She had two shafts and two 0.85 m (3 ft) propellers. The boat was capable of operating at depths of up to 80–150 metres (260–490 ft).
The submarine had a maximum surface speed of 12 knots (22 km/h; 14 mph) and a maximum submerged speed of 7 knots (13 km/h; 8.1 mph). When submerged, the boat could operate for 35–42 nautical miles (65–78 km; 40–48 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 3,800 nautical miles (7,000 km; 4,400 mi) at 8 knots (15 km/h; 9.2 mph). U-11 was fitted with three 53.3 cm (21 in) torpedo tubes at the bow, five torpedoes or up to twelve Type A torpedo mines, and a 2 cm (0.79 in) anti-aircraft gun. The boat had a complement of twentyfive.
Fate
The U-boat was scuttled on 3 May 1945 in Kiel. The wreck was broken up.