German submarine U-756

From Wikipedia, the free encyclopedia
Jump to: navigation, search
History
Nazi Germany
Name: U-756
Ordered: 9 October 1939[1]
Builder: Kriegsmarinewerft Wilhelmshaven
Yard number: 139
Laid down: 18 January 1940[1]
Launched: 30 October 1941[1]
Commissioned: 30 December 1941[1]
Status: Sunk 1 September 1942[1]
General characteristics
Class and type: Type VIIC submarine
Displacement:
  • 769 tonnes (757 long tons) surfaced
  • 871 t (857 long tons) submerged
Length:
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:
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:
Service record
Part of:
Commanders:
  • Kptlt. Klaus Harney
  • 30 December 1941 – 1 September 1942
Operations: 15 August – 1 September 1942
Victories: None

German submarine U-756 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. Laid down as yard number 139 at the Kriegsmarinewerft (KMW) in Wilhelmshaven, she served with 6th U-boat flotilla from 30 December 1941 to 1 September 1942 under the command of Kapitänleutnant Klaus Harney.[1] U-756 did not survive to complete her first patrol and did not sink or damage any ships.

Design[edit]

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-756 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[2] 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).[2]

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).[2] 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-756 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 an anti-aircraft gun. The boat had a complement of between forty-four and sixty.[2]

Fate[edit]

Eighteen days into her first patrol,[3] on 1 September 1942 U-756 was in position 58°08′N 27°33′W / 58.133°N 27.550°W / 58.133; -27.550Coordinates: 58°08′N 27°33′W / 58.133°N 27.550°W / 58.133; -27.550 in the mid North-Atlantic[4] when she was attacked by the Canadian corvette HMCS Morden. Heavily damaged, the vessel went down with all 43 aboard.

References[edit]

  1. ^ a b c d e f g h Helgason, Guðmundur. "The Type VIIC boat U-756". German U-boats of WWII - uboat.net. 
  2. ^ a b c d Gröner 1991, pp. 43-46.
  3. ^ Helgason, Guðmundur. "War Patrols by German U-boat U-756". German U-boats of WWII - uboat.net. Retrieved 29 December 2014. 
  4. ^ Helgason, Guðmundur. "Patrol of German U-boat U-756 from 15 August 1942 to 1 September 1942". German U-boats of WWII - uboat.net. Retrieved 29 December 2014. 

Bibliography[edit]

  • Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945. Der U-Boot-Krieg (in German) IV (Hamburg, Berlin, Bonn: Mittler). ISBN 3-8132-0514-2. 
  • Edwards, Bernard (1996). Dönitz and the Wolf Packs - The U-boats at War. Cassell Military Classics. pp. 103, 105. ISBN 0-304-35203-9. 
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945 2. Translated by Thomas, Keith; Magowan, Rachel (London: Conway Maritime Press). ISBN 0-85177-593-4. 

External links[edit]