German submarine U-101 (1940)

	U-52, a typical Type VIIB boat
History
Nazi Germany
Name	U-101
Ordered	15 December 1937
Builder	Germaniawerft, Kiel
Yard number	595
Laid down	31 March 1939
Launched	13 January 1940
Commissioned	11 March 1940
Decommissioned	22 October 1943
Fate	Scuttled on 3 May 1945; wreck later scrapped
Badge
General characteristics
Class and type	Type VIIB U-boat
Displacement	753 t (741 long tons) surfaced; 857 t (843 long tons) submerged;
Length	66.50 m (218 ft 2 in) o/a; 48.80 m (160 ft 1 in) pressure hull;
Beam	6.20 m (20 ft 4 in) o/a; 4.70 m (15 ft 5 in) pressure hull;
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	17.9 knots (33.2 km/h; 20.6 mph) surfaced; 8 knots (15 km/h; 9.2 mph);
Range	8,700 nmi (16,100 km; 10,000 mi) at 10 knots (19 km/h; 12 mph) surfaced; 90 nmi (170 km; 100 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	230 m (750 ft); Calculated crush depth: 250–295 m (820–968 ft);
Boats & landing ; craft carried	1 inflatable rubber boat
Complement	4 officers, 40–56 enlisted
Sensors and ; processing systems	Gruppenhorchgerät
Armament	5 × 53.3 cm (21 in) torpedo tubes: four bow, one stern; 14 × torpedoes or 26 TMA mines; 1 × 8.8 cm (3.5 in) deck gun with 220 rounds; 1 × 2 cm (0.79 in) C/30 anti-aircraft gun;
Service record
Part of:	7th U-boat Flotilla; 11 March 1940 – 28 February 1942; 26th U-boat Flotilla; 1 – 31 March 1942; 21st U-boat Flotilla; 1 April – 31 August 1942; 24th U-boat Flotilla; 1 September 1942 – 31 August 1943; 23rd U-boat Flotilla; 1 September – 22 October 1943;
Identification codes:	M 15 344
Commanders:	Kptlt. Fritz Frauenheim; 11 March – 18 November 1940; Kptlt. Ernst Mengersen; 18 November 1940 – 31 December 1941; Oblt.z.S. Karl-Heinz Marbach; 1 January – 3 February 1942; Oblt.z.S. Friedrich Bothe; 4 February – 31 March 1942; Oblt.z.S. Ernst von Witzendorff; May – 25 October 1942; Oblt.z.S. Helmut Münster; 15 September 1942 – 22 October 1943;
Operations:	10 patrols:; 1st patrol:; a. 29 April – 3 May 1940; b. 5 – 10 May 1940 ; 2nd patrol:; 21 May – 25 June 1940; 3rd patrol:; 9 August – 16 September 1940; 4th patrol:; 5 – 24 October 1940; 5th patrol:; 24 November – 7 December 1940; 6th patrol:; 23 January – 19 February 1941; 7th patrol:; 24 March – 2 May 1941; 8th patrol:; 28 May – 4 July 1941; 9th patrol:; a. 7 August – 4 September 1941; b. 4 – 6 October 1941; 10th patrol:; 11 October – 16 November 1941;
Victories:	22 merchant ships sunk ; (111,673 GRT); 1 warship sunk ; (1,190 tons); 2 merchant ships damaged ; (9,113 GRT);

German submarine U-101 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II. She had a highly successful career.

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