German submarine U-711

History
Nazi Germany
Name	U-711
Ordered	7 December 1940
Builder	H. C. Stülcken Sohn, Hamburg
Yard number	777
Laid down	31 July 1941
Launched	25 June 1942
Commissioned	26 September 1942
Fate	Sunk on 4 May 1945 at 68°48′N 16°38′E / 68.800°N 16.633°E / 68.800; 16.633
General characteristics
Class and type	Type VIIC submarine
Displacement	769 tonnes (757 long tons) surfaced 871 t (857 long tons) submerged
Length	67.10 m (220 ft 2 in) o/a 50.50 m (165 ft 8 in) pressure hull
Beam	6.20 m (20 ft 4 in) o/a 4.70 m (15 ft 5 in) pressure hull
Height	9.60 m (31 ft 6 in)
Draught	4.74 m (15 ft 7 in)
Installed power	2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels) 750 PS (550 kW; 740 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	17.7 knots (32.8 km/h; 20.4 mph) surfaced 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range	8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph)
Test depth	230 m (750 ft) Crush depth: 250–295 m (820–968 ft)
Complement	44–60 officers & ratings
Armament	5 × 53.3 cm (21 in) torpedo tubes (four bow, one stern) 14 × torpedoes 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 2 × twin 2 cm (0.79 in) C/30 anti-aircraft guns
Service record
Part of:	5th U-boat Flotilla 26 September 1942 – 31 March 1943 11th U-boat Flotilla 1 April – 31 May 1943 13th U-boat Flotilla 1 June 1943 – 4 May 1945
Identification codes:	M 50 659
Commanders:	Oblt.z.S. / Kptlt. Hans-Günther Lange 26 September 1942 – 4 May 1945
Operations:	12 patrols: 1st patrol: a. 25 March – 30 April 1943 b. 12 – 14 May 1943 2nd patrol: 25 May – 18 June 1943 3rd patrol: a. 22 July – 30 September 1943 b. 2 – 5 October 1943 c. 15 – 17 December 1943 d. 18 – 19 December 1943 e. 20 – 23 December 1943 f. 19 – 21 March 1944 4th patrol: 22 March – 6 April 1944 5th patrol: 11 – 15 April 1944 6th patrol: 24 April – 5 May 1944 7th patrol: a. 30 May – 8 July 1944 b. 29 – 30 July 1944 8th patrol: a. 2 – 19 August 1944 b. 22 – 26 August 1944 c. 27 – 28 August 1944 d. 3 – 5 September 1944 9th patrol: a. 7 September – 4 October 1944 b. 6 – 8 October 1944 c. 23 – 26 January 1945 10th patrol: 9 – 24 February 1945 11th patrol: 14 – 31 March 1945 12th patrol: 15 April – 2 May 1945
Victories:	1 merchant ship sunk (10 GRT) 1 warship sunk (925 tons) 1 auxiliary warship damaged (20 GRT)

German submarine U-711 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

Ordered 7 December 1940, laid down, 31 July 1941 and launched 25 June 1942. She was commanded by Oberleutnant zur See Hans-Günther Lange (who was awarded the Knights Cross).