German submarine U-764

History
Nazi Germany
Name:	U-764
Ordered:	15 August 1940
Builder:	Kriegsmarinewerft Wilhelmshaven
Yard number:	147
Laid down:	1 February 1941
Launched:	13 March 1943
Commissioned:	6 May 1943
Fate:	Surrendered on 14 May 1945 at Loch Eriboll, Scotland. She was later sunk, as part of Operation Deadlight in position 56°06′N 09°00′W / 56.100°N 9.000°W / 56.100; -9.000Coordinates: 56°06′N 09°00′W / 56.100°N 9.000°W / 56.100; -9.000, on 2 February 1946.
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:	4officers, 40–56 enlisted
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) various AA guns
Service record
Part of:	8th U-boat Flotilla 6 May – 31 October 1943 - Training 9th U-boat Flotilla 1 November 1943 – 30 September 1944 11th U-boat Flotilla 1 October 1944 – 8 May 1945
Commanders:	Oblt.z.S. Hanskurt von Bremen 6 May 1943 – 14 May 1945
Operations:	1st patrol: 26 October – 11 December 1943 2nd patrol: 17 January – 15 March 1944 3rd patrol: 26–28 April 1944 4th patrol: 6–23 June 1944 5th patrol: 6 August – 19 September 1944 6th patrol: 26 December 1944 – 4 February 1945 7th patrol: 19–23 March 1945 8th patrol: 26 April – 14 May 1945
Victories:	1 merchant ship sunk (638 GRT) 2 warships sunk (1,696 tons)

German submarine U-764 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 1 February 1941 by Kriegsmarinewerft Wilhelmshaven as yard number 147, launched on 13 March 1943 and commissioned on 6 May 1943 under Oberleutnant zur See Hanskurt von Bremen.

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-764 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 Garbe, Lahmeyer & Co. RP 137/c 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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