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German submarine U-768

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Title: German submarine U-768  
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Subject: World War II shipwrecks in the Baltic Sea, 31st U-boat Flotilla, U-boats commissioned in 1943, List of Kriegsmarine ships, U-boats sunk in 1943
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German submarine U-768

Nazi Germany
Name: U-768
Ordered: 15 August 1940
Builder: Kriegsmarinewerft Wilhelmshaven
Laid down: 5 April 1941
Launched: 22 August 1943
Commissioned: 14 October 1943
Fate: Sunk in a collision with U-745, 20 November 1943
General characteristics [1]
Class & type: Type VIIC submarine
  • 769 tonnes (757 long tons) surfaced
  • 871 t (857 long tons) submerged
  • 1,070 t (1,053 long tons) total
  • 67.10 m (220 ft 2 in) total
  • 50.50 m (165 ft 8 in) pressure hull
  • 6.20 m (20 ft 4 in) total
  • 4.70 m (15 ft 5 in) pressure hull
Draft: 4.74 m (15 ft 7 in)
  • Diesel-electric
  • 3,200 PS (2,354 kW; 3,156 shp) surfaced
  • 750 PS (552 kW; 740 shp) submerged
  • 17.7 knots (32.8 km/h; 20.4 mph) surfaced
  • 7.66 knots (14.19 km/h; 8.81 mph) submerged
  • 13,700 nmi (25,400 km; 15,800 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 125 nmi (232 km; 144 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth: 220 m (721 ft 9 in)
Complement: 4 officers, 40–56 enlisted44-52 men
Service record
Commanders: Oblt.z.S. Johann Buttjer

German submarine U-768 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

Under the command of Oberleutnant zur See Johann Buttjer she was commissioned on 14 October 1943, and was sunk in a collision with U-745 on 20 November 1943.


  • Design 1
  • References 2
  • Bibliography 3
  • External links 4


German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-768 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[1] It 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 shaft horsepower (760 PS; 560 kW) for use while submerged. It had two shafts and two 1.23 m (4 ft) propellers. It 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, it could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, it could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-768 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at its bow and one at its stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and an anti-aircraft gun. It had a complement of between forty-four and sixty.[1]


  1. ^ a b c d e Gröner 1985, pp. 72-74.


External links

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