German submarine U-313

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Career (Nazi Germany)
Name: U-313
Ordered: 25 August 1941
Builder: Flender Werke, Lübeck
Yard number: 313
Laid down: 11 May 1942
Launched: 27 March 1943
Commissioned: 20 May 1943
Fate: Surrendered, May 1945. Sunk in December as part of Operation Deadlight
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
Height: 9.6 m (31 ft 6 in)
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 × GL RP 137/c 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 and ratings
Service record[2][3]
Part of: 8th U-boat Flotilla
(20 May–31 December 1943)
11th U-boat Flotilla
(1 January–14 September 1944)
13th U-boat Flotilla
(15 September 1944–8 May 1945)
Commanders: Kptlt. Friedrich Schweiger
(20 May 1943–8 May 1945)
Operations: 1st patrol:
a. 26 January–2 February 1944
b. 7 February–29 February 1944
2nd patrol:
15 March–13 April 1944
3rd patrol:
25 April–12 May 1944
4th patrol:
30 May–3 July 1944
5th patrol:
6–14 September 1944
6th patrol:
20–23 September 1944
26 September–8 November 1944
7th patrol:
26 September–8 November
8th patrol:
23 November–6 December 1944
9th patrol:
11 December–16 December 1944
10th patrol:
23 December 1944–17 February 1945
11th patrol:
16–29 March 1945
12th patrol:
17 April–8 May 1945
Victories: None

German submarine U-313 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 11 May 1941 at the Flender Werke yard at Lübeck as yard number 313, launched on 27 March 1943 and commissioned on 20 May under the command of Kapitänleutnant Friedrich Schweiger.

During her career, the U-boat sailed on twelve combat patrols, but sank no ships before she surrendered at Narvik in May 1945. She was sunk in December as part of Operation Deadlight.[2]

She was a member of eleven wolfpacks.

Service history[edit]

The boat's service life began with training with the 8th U-boat Flotilla in May 1943. She was transferred to the 11th flotilla for operations on 1 January 1944. She was then reassigned to the 13th flotilla on 15 September.

She made a pair of short voyages from Kiel in Germany to Stavanger and Bergen in Norway in January 1944.

1st, 2nd and 3rd patrols[edit]

The submarine's first patrol began with her departure from Bergen on 26 January 1944. She arrived at Hammerfest on 2 February but departed again on the 7th. She finished the patrol at Hammerfest on the 29th.

U-313 spent her second and third patrols in the Norwegian Sea.

4th, 5th, 6th and 7th patrols[edit]

Her fourth sortie took her as far as a point southwest of Bear Island. On 26 June 1944, she was north of Jan Mayen Island.

The boat's fifth patrol kept her closer to the Norwegian coast.

Her sixth and seventh patrols saw the submarine docking in Skillefjord on 23 September 1944, having left Narvik on the 20th. She then left the smaller port on the 26th and returned to Narvik.

8th, 9th and 10th patrols[edit]

For her eighth sortie, she rounded the North Cape, passing Murmansk.

Her ninth patrol was relatively short, beginning in Bodenbucht on 11 December 1944, (northwest of Narvik) and terminating in Trondheim on the 16th.

If her previous patrol was brief, her tenth effort, at 57 days, was her longest and involved sailing near to the Orkney Islands. Having departed Trondheim, the boat returned to Narvik.

11th and 12th patrols and fate[edit]

Having used Harstad (northwest of Narvik) briefly and following the German capitulation, U-313 was moved, first from Narvik to Skjomenfjord, then to Loch Eriboll in Scotland on 19 May 1945 in preparation for Operation Deadlight. She was finally transferred to Loch Ryan and sunk on 27 November. According to one source, she capsized while under tow by HMS Blencathra.[4]


  1. ^ Gröner 1985, pp. 72-74.
  2. ^ a b Helgason, Guðmundur. "The Type VIIC boat U-313". German U-boats of WWII - Retrieved 17 August 2012. 
  3. ^ Helgason, Guðmundur. "War Patrols by German U-boat U-313". German U-boats of WWII - Retrieved 17 August 2012. 
  4. ^ Hofmann, Markus. "U 313". Deutsche U-Boote 1935-1945 - (in German). Retrieved 26 December 2014. 


  • 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. 

External links[edit]

Coordinates: 55°40′N 8°24′W / 55.667°N 8.400°W / 55.667; -8.400