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

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 a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.[1]

Service history

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

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

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

  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

  • Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press. ISBN 1-55750-186-6.
  • Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 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

  • Helgason, Guðmundur. "The Type VIIC boat U-706". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.