German submarine U-628

History
Nazi Germany
Name:	U-628
Ordered:	15 August 1940
Builder:	Blohm & Voss, Hamburg
Yard number:	604
Laid down:	7 August 1941
Launched:	29 April 1942
Commissioned:	25 June 1942
Fate:	Sunk 3 July 1943 in the North Atlantic NW of Cape Ortegal in position 44°11′N 08°45′W / 44.183°N 8.750°W / 44.183; -8.750Coordinates: 44°11′N 08°45′W / 44.183°N 8.750°W / 44.183; -8.750, by depth charges from a RAF Liberator aircraft of 224/J Squadron.
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 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 (four bow, one stern) 14 × torpedoes or 26 TMA mines 1 × 8.8 cm (3.46 in) deck gun (220 rounds) various AA guns
Service record
Part of:	5th U-boat Flotilla 25 June – 30 November 1942 - Training 1st U-boat Flotilla 1 December 1942 – 3 July 1943
Commanders:	Kptlt. Heinrich Hasenschar 25 June 1942 – 3 July 1943
Operations:	1st patrol: 28 November 1942 – 8 January 1943 2nd patrol: 1 February – 9 March 1943 3rd patrol: 8 April – 19 May 1943 4th patrol: 1–3 July 1943
Victories:	4 merchant ships sunk (21,896 GRT) 4 merchant ships damaged (25,531 GRT)

German submarine U-628 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 7 August 1941 by Blohm & Voss, Hamburg as yard number 604, launched on 29 April 1942 and commissioned on 25 June 1942 under Kapitänleutnant Heinrich Hasenschar.

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-628 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 Brown, Boveri & Cie GG UB 720/8 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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