German submarine U-622

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History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-622
Ordered15 August 1940
Builder Blohm & Voss, Hamburg
Yard number598
Laid down1 July 1941
Launched19 March 1942
Commissioned14 May 1942
FateSunk on 24 July 1943 near Trondheim in position 63°27′N10°23′E / 63.450°N 10.383°E / 63.450; 10.383 , by bombs in a US air raid.
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
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 [1]
Part of:
Identification codes: M 04 155
Commanders:
Operations:
  • 4 patrols:
  • 1st patrol:
  • a. 12 October – 12 November 1942
  • b. 14 – 17 November 1942
  • 2nd patrol:
  • 28 December 1942 – 29 January 1943
  • 3rd patrol:
  • a. 9 February – 15 March 1943
  • b. 16 – 18 March 1943
  • c. 17 – 21 May 1943
  • 4th patrol:
  • a. 29 May – 5 June 1943
  • b. 14 June – 10 July 1943
Victories: None

German submarine U-622 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 1 July 1941 by Blohm & Voss, Hamburg, as yard number 598, launched on 19 March 1942 and commissioned on 14 May 1942 under Oberleutnant zur See Horst-Thilo Queck.

Contents

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-622 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 Brown, Boveri & Cie GG UB 720/8 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-622 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. [2]

Service history

The boat's career began with training at 8th U-boat Flotilla on 14 May 1942, followed by active service on 2 October 1942 as part of the 11th Flotilla until 31 May 1943, when she then transferred to 13th Flotilla on 1 June 1943 for the remainder of her service.

In four patrols she sank no ships.

Wolfpacks

U-622 took part in one wolfpack, namely:

Fate

U-622 was sunk on 24 July 1943 near Trondheim in position 63°27′N10°23′E / 63.450°N 10.383°E / 63.450; 10.383 , by American B-17 bombers of the 95th Bomb Group. It was one of the only U-boats sunk by high-level bombing during World War II. [3]

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References

  1. ↑ Helgason, Guðmundur. "The Type VIIC boat U-622". German U-boats of WWII - uboat.net. Retrieved 5 November 2014.
  2. 1 2 3 4 Gröner 1991, pp. 43–46.
  3. ↑ Morris, Rob with Ian Hawkins (2012). The wild blue yonder and beyond the 95th Bomb Group in war and peace. Washington, D.C.: Potomac Books. pp. 103–104. ISBN   978-1-59797-717-3 . Retrieved 5 November 2014.

Bibliography

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