German submarine U-990

History
Nazi Germany
Name	U-990
Ordered	25 May 1941
Builder	Blohm & Voss, Hamburg
Yard number	190
Laid down	17 October 1942
Launched	16 June 1943
Commissioned	28 July 1943
Fate	Sunk on 25 May 1944 in the Norwegian Sea by depth charges from a RAF Liberator bomber
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
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 nmi (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph) surfaced 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	230 m (750 ft) Crush depth: 250–295 m (820–968 ft)
Complement	4 officers, 40–56 enlisted
Armament	5 × 53.3 cm (21 in) torpedo tubes (4 bow, 1 stern) 14 × torpedoes or 26 TMA mines 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 1 × twin 2 cm (0.79 in) C/30 anti-aircraft gun
Service record
Part of:	5th U-boat Flotilla 28 July – 31 December 1943 11th U-boat Flotilla 1 January – 25 May 1944
Identification codes:	M 54 093
Commanders:	Kptlt. Hubert Nordheimer[1] 28 July 1943 – 25 May 1944
Operations:	4 patrols: 1st patrol: 26 January – 28 February 1944 2nd patrol: 4 – 27 March 1944 3rd patrol: a. 31 March – 5 April 1944 b. 8 – 12 April 1944 4th patrol: 22 – 25 May 1944
Victories:	1 warship sunk (1,920 tons)

German submarine U-990 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 17 October 1942 by Blohm & Voss, Hamburg as yard number 190, launched on 16 June 1943 and commissioned on 28 July 1943 under Kapitänleutnant Hubert Nordheimer.