German submarine U-623

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Career (Nazi Germany)
Name: U-623
Ordered: 15 August 1940
Builder: Blohm & Voss, Hamburg
Yard number: 599
Laid down: 15 July 1941
Launched: 31 March 1942
Commissioned: 21 May 1942
Fate: Sunk 21 February 1943 in the North Atlantic in position 48°08′N 29°37′W / 48.133°N 29.617°W / 48.133; -29.617Coordinates: 48°08′N 29°37′W / 48.133°N 29.617°W / 48.133; -29.617, by depth charges from a RAF Liberator.
General characteristics [1]
Class and type: Type VIIC submarine
Displacement: 769 tonnes (757 long tons) surfaced
871 t (857 long tons) submerged
Length: 67.1 m (220 ft 2 in) o/a
50.5 m (165 ft 8 in) pressure hull
Beam: 6.2 m (20 ft 4 in) o/a
4.7 m (15 ft 5 in) pressure hull
Draft: 4.74 m (15 ft 7 in)
Propulsion: 2 × supercharged Germaniawerft 6-cylinder 4-stroke F46 diesel engines, totalling 2,800–3,200 PS (2,800–3,200 bhp; 2,100–2,400 kW). Max rpm: 470-490
2 × BBC GG UB 720/8 electric motors, totalling 750 PS (740 shp; 550 kW) and max rpm: 296
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: 44–52 officers & ratings
Armament: 5 × 53.3 cm (21 in) torpedo tubes (4 bow, 1 stern)
14 × torpedoes or 26 TMA mines
1 × 8.8 cm (3.46 in) deck gun (220 rounds)
Various AA guns
Service record[2]
Part of: 8th U-boat Flotilla
(21 May - 30 November 1942) - Training
6th U-boat Flotilla
(1 December 1942 - 21 February 1943)
Commanders: Oblt.z.S. Hermann Schrüder
(21 May 1942 - 21 February 1943)
Operations: 1st patrol:
5 November - 26 December 1942
2nd patrol:
2–21 February 1943
Victories: None

German submarine U-623 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 15 July 1941 by Blohm & Voss, Hamburg as yard number 599, launched on 31 March 1942 and commissioned on 21 May 1942 under Oberleutnant zur See Hermann Schrüder.

Service History[edit]

The boat's career began with training at 8th U-boat Flotilla on 21 May 1942, followed by active service on 1 December 1942 as part of the 6th Flotilla for the remainder of her service.

In two patrols she sank no ships.

Wolfpacks[edit]

U-623 took part in five wolfpacks, namely

  • Drachen (22 November - 3 December 1942)
  • Panzer (3–9 December 1942)
  • Ungestüm (11–13 December 1942)
  • Raufbold (13–18 December 1942)
  • Ritter (11–21 February 1943)

Fate[edit]

U-623 was caught while hurrying on the surface to join the attack against Convoy ON 166 and sunk on 21 February 1943 in the North Atlantic, at the position 48°08′N 29°37′W / 48.133°N 29.617°W / 48.133; -29.617, by depth charges from a RAF Liberator of 120 Squadron. All hands were lost.

See also[edit]

References[edit]

  1. ^ Gröner 1985, pp. 72-74.
  2. ^ Helgason, Guðmundur. "The Type VIIC boat U-623". German U-boats of WWII - uboat.net. Retrieved 11 November 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 (1985). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. Die deutschen Kriegsschiffe 1815–1945 (in German) III (Koblenz: Bernard & Graefe). ISBN 3-7637-4802-4. 
  • Edwards, Bernard (1996). Dönitz and the Wolf Packs - The U-boats at War. p. 162. ISBN 0-304-35203-9. 
  • Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN 1-85780-072-9. 

External links[edit]