German submarine U-722

History
Nazi Germany
Name:	U-722
Ordered:	25 August 1941
Builder:	H. C. Stülcken Sohn, Hamburg
Yard number:	788
Laid down:	21 December 1942
Launched:	21 September 1943
Commissioned:	15 December 1943
Fate:	Sunk on 27 March 1945 in the North Atlantic in position 57°09′N 06°55′W / 57.150°N 6.917°W / 57.150; -6.917Coordinates: 57°09′N 06°55′W / 57.150°N 6.917°W / 57.150; -6.917, by British frigates HMS Fitzroy, HMS Redmill and HMS Byron.
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 1 × 8.8 cm (3.46 in) deck gun (220 rounds) Various AA guns
Service record
Part of:	31st U-boat Flotilla 15 December 1943 – 31 July 1944 - Training 1st U-boat Flotilla 1 August 1944 – 30 September 1944 11th U-boat Flotilla 1 October 1944 – 27 March 1945
Commanders:	Oblt.z.S. Hans-Heinrich Reimers 15 December 1943 – 27 March 1945
Operations:	1st patrol: 16 October – 20 November 1944 2nd patrol: 7–29 December 1944 3rd patrol: 21 February – 27 March 1945
Victories:	1 merchant ship sunk (2,190 GRT)

German submarine U-722 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 21 December 1942 by H. C. Stülcken Sohn, Hamburg as yard number 788, launched on 21 September 1943 and commissioned on 15 December 1943 under Leutnant zur See Hans-Heinrich Reimers.

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-722 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two AEG GU 460/8–27 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).

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