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
Struck:	5 January 1945, Kiel
Fate:	Scuttled: 2 May 1945, Kiel Arsenal
General characteristics
Class and 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
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 1 × 2 cm (0.79 in) anti-aircraft gun
Service record
Part of:	Kriegsmarine: U-Boat Training Flotilla 1st U-boat Flotilla 5th U-boat Flotilla 21st U-boat Flotilla 22nd U-boat Flotilla
Identification codes:	M 27 219
Commanders:	Hans-Rudolf Rösing Viktor Schütze Georg Peters Gottfried Stolzenburg Günter Dobenecker
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.

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.

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).