German submarine U-11 (1935)

U-9, a typical Type IIB boat
History
Nazi Germany
Name	U-11
Ordered	20 July 1934
Builder	Germaniawerft, Kiel
Yard number	545
Laid down	6 May 1935
Launched	27 August 1935
Commissioned	21 September 1935
Stricken	5 January 1945, Kiel
Fate	Scuttled: 3 May 1945, Kiel Arsenal
General characteristics
Class and type	Type IIB coastal submarine
Displacement	279 t (275 long tons) surfaced 328 t (323 long tons) submerged
Length	42.70 m (140 ft 1 in) o/a 27.80 m (91 ft 2 in) pressure hull
Beam	4.08 m (13 ft 5 in) (o/a) 4.00 m (13 ft 1 in) (pressure hull)
Height	8.60 m (28 ft 3 in)
Draught	3.90 m (12 ft 10 in)
Installed power	700 PS (510 kW; 690 bhp) (diesels) 410 PS (300 kW; 400 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	13 knots (24 km/h; 15 mph) surfaced 7 knots (13 km/h; 8.1 mph) submerged
Range	1,800 nmi (3,300 km; 2,100 mi) at 12 knots (22 km/h; 14 mph) surfaced 35–43 nmi (65–80 km; 40–49 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	80 m (260 ft)
Complement	3 officers, 22 men
Armament	3 × 53.3 cm (21 in) torpedo tubes 5 × torpedoes or up to 12 TMA or 18 TMB mines 1 × 2 cm (0.79 in) C/30 anti-aircraft gun
Service record
Part of:	U-boat School Flotilla 1 September 1935 – 1 August 1939 1 September 1939 – 30 June 1940 1st U-boat Flotilla 1 July – 30 November 1940 21st U-boat Flotilla 1 December 1940 – 1 May 1941 5th U-boat Flotilla 1 October 1941 – 28 February 1943 22nd U-boat Flotilla 1 March 1943 – 14 December 1944
Identification codes:	M 27 219
Commanders:	Kptlt. Hans-Rudolf Rösing 21 September 1935 – 1 October 1937 Kptlt. Viktor Schütze 13 August 1938 – 4 September 1939 Kptlt. Georg Peters 5 September 1939 – 22 March 1943 Oblt.z.S.d.R Gottfried Stolzenburg 23 March 1943 – 13 July 1944 Oblt.z.S. Günter Dobenecker 14 July – 14 December 1944
Operations:	None
Victories:	None

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.

In 1940, U-11 was the first unit to carry out sea trials of a new anechoic tile, which was developed by the Kriegsmarine for reducing a submarines' acoustic signature. This development project was codenamed Alberich after the invisible sorcerer from Germanic mythology.