German submarine U-765

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History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-765
Ordered15 August 1940
Builder Kriegsmarinewerft, Wilhelmshaven
Yard number148
Laid down15 February 1941
Launched22 April 1943
Commissioned19 June 1943
FateSunk on 6 May 1944
General characteristics
Class and type Type VIIC submarine
Displacement
Length
Beam
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Height9.60 m (31 ft 6 in)
Draught4.74 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
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)
Complement4 officers, 40–56 enlisted
Armament
Service record
Part of:
Identification codes: M 52 665
Commanders:
  • Oblt.z.S. Werner Wendt
  • 19 June 1943 – 6 May 1944
Operations:
  • 1 patrol:
  • 3 April – 6 May 1944
Victories: None

German submarine U-765 was a German Type VIIC U-boat created for service in World War II. U-765 was notable for not suffering any casualties until the time of her sinking. The U-boat did not sink or damage any ships.

Contents

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-765 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. [1] 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). [1]

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph). [1] When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-765 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty. [1]

Fate

U-765 was sunk on 6 May 1944 in the North Atlantic, in position 52°30′N28°28′W / 52.500°N 28.467°W / 52.500; -28.467 , by depth charges from two Swordfish aircraft of 825 Naval Air Squadron from the British Escort Carrier HMS Vindex, operating alongside the British frigates HMS Aylmer, HMS Bligh and HMS Bickerton. The attack left 37 dead and 11 survivors.

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References

  1. 1 2 3 4 Gröner 1991, pp. 43–46.

Bibliography