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German submarine U-337

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German submarine U-337

Nazi Germany
Name: U-337
Ordered: 21 November 1940
Builder: Nordseewerke, Emden
Yard number: 209
Laid down: 1 April 1941
Launched: 26 March 1942
Commissioned: 6 May 1942
Fate: Listed as missing, 3 January 1943[1]
General characteristics
Class & type: Type VIIC submarine
  • 769 tonnes (757 long tons) surfaced
  • 871 t (857 long tons) submerged
  • 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)
Draft: 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)
  • 17.7 knots (32.8 km/h; 20.4 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
  • 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
Service record[1][2]
Part of:
  • Oblt.z.S. Kurt Ruwiedel
  • 6 May 1942 – 3 January 1943
Operations: One patrol: 24 December 1942 – 3 January 1943
Victories: None

German submarine U-337 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.[1]

The submarine was laid down on 1 April 1941 at the Nordseewerke yard at Emden, launched on 26 March 1942, and commissioned on 6 May 1942 under the command of Oberleutnant zur See Kurt Ruwiedel.[1]


  • Design 1
  • Service history 2
  • References 3
  • Bibliography 4
  • External links 5


German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-337 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[3] It 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 AEG GU 460/8-276 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. It had two shafts and two 1.23 m (4 ft) propellers. It was capable of operating at depths of up to 230 metres (750 ft).[3]

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).[3] When submerged, it could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, it could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-337 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at its bow and one at its stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and an anti-aircraft gun. It had a complement of between forty-four and sixty.[3]

Service history

After training with the 5th U-boat Flotilla at Kiel, U-337 was transferred to the 6th U-boat Flotilla based at Saint-Nazaire in France for front-line service.[1] After sailing from Kiel on 24 December 1942, the U-boat sailed north and then west into the Atlantic south of Iceland.[4] Her last radio report, on 3 January 1943, gave her position as . The U-boat was never heard from again. There is no explanation for its loss.[1]


  1. ^ a b c d e f Helgason, Guðmundur. "U-337"The Type VIIC U-boat . German U-boats of WWII - Retrieved 16 April 2010. 
  2. ^ Helgason, Guðmundur. "U-337"War Patrols by . German U-boats of WWII - Retrieved 16 April 2010. 
  3. ^ a b c d Gröner 1985, pp. 72-74.
  4. ^ Helgason, Guðmundur. from 24 Dec 1942 to 3 Jan 1943"U-337"Patrol of . German U-boats of WWII - Retrieved 16 April 2010. 


  • 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).  
  • Gröner, Erich (1985). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. Die deutschen Kriegsschiffe 1815-1945 (in German) III (Koblenz:  

External links

  • Helgason, Guðmundur. "The Type VIIC boat U-337". German U-boats of WWII - Retrieved 26 December 2014. 
  • Hofmann, Markus. "U 337". Deutsche U-Boote 1935-1945 - (in German). Retrieved 26 December 2014. 
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