German submarine U-706

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History
Nazi Germany
Name: U-706
Ordered: 9 October 1939
Builder: H. C. Stülcken Sohn, Hamburg
Yard number: 766
Laid down: 22 November 1940
Launched: 24 November 1941
Commissioned: 16 March 1942
Fate: Sunk on 3 August 1943
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)
Speed:
  • 17.7 knots (32.8 km/h; 20.4 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 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
Victories: 3 ships sunk for a total of 18,650 GRT

U-706, a type VIIC U-boat, was laid down on 22 November 1940. She was launched on 24 November 1941 and commissioned on 16 March 1942.

Design[edit]

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-706 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-706 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.[1]

Service history[edit]

U-706 was commanded by Korvettenkapitän Alexander von Zitzewitz. She was attached to the 5th Flotilla from 16 March to 30 September 1942. On 1 October 1942, she was transferred to the 6th Flotilla and made four patrols during the war, sinking three ships with a total tonnage of 18,650 GRT. On 3 August 1943, while in Bay of Biscay, she was disabled by depth charges from a Canadian Hampden aircraft, then finished off by a US Liberator aircraft from A/S Sqdn. 4. She sank at position 46°15′N 10°25′W / 46.250°N 10.417°W / 46.250; -10.417Coordinates: 46°15′N 10°25′W / 46.250°N 10.417°W / 46.250; -10.417.

Wolfpacks[edit]

U-706 took part in ten wolfpacks, namely.

  • Luchs (1–6 October 1942)
  • Panther (6–20 October 1942)
  • Südwärts (24–26 October 1942)
  • Falke (28 December 1942 – 4 January 1943)
  • Jaguar (18–31 January 1943)
  • Seeteufel (23–30 March 1943)
  • Löwenherz (1–10 April 1943)
  • Lerche (10–16 April 1943)
  • Meise (16–22 April 1943)
  • Specht (22 April – 4 May 1943)

Summary of raiding history[edit]

Date Ship Name Nationality Tonnage (GRT) Fate[2]
12 October 1942 Stornest  United Kingdom 4,265 Sunk
5 April 1943 British Ardour  United Kingdom 7,124 Sunk
12 April 1943 Fresno City  United Kingdom 7,261 Sunk

References[edit]

  1. ^ a b c d Gröner 1991, pp. 43-46.
  2. ^ Helgason, Guðmundur. "U-706". German U-boats of WWII - uboat.net. Retrieved 9 February 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. 
  • 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]