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German submarine U-313

History
Nazi Germany
NameU-313
Ordered25 August 1941
BuilderFlender Werke, Lübeck
Yard number313
Laid down11 May 1942
Launched27 March 1943
Commissioned20 May 1943
FateSurrendered on 9 May 1945. Sunk on 27 December 1945 as part of Operation Deadlight
General characteristics
Class and typeType VIIC submarine
Displacement
Length
Beam
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Height9.60 m (31 ft 6 in)
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][2]
Part of:
Identification codes: M 44 826
Commanders:
  • Kptlt. Friedrich Schweiger
  • 20 May 1943 – 9 May 1945
Operations:
  • 12 patrols:
  • 1st patrol:
  • a. 26 January – 2 February 1944
  • b. 7 – 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
  • 7th patrol:
  • 26 September – 3 November 1944
  • 8th patrol:
  • 23 November – 6 December 1944
  • 9th patrol:
  • 11 – 16 December 1944
  • 10th patrol:
  • 23 December 1944 – 17 February 1945
  • 11th patrol:
  • 16 – 29 March 1945
  • 12th patrol:
  • a. 17 April – 8 May 1945
  • b. 12 May 1945
  • c. 15 – 19 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 1942 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 on 9 May 1945. She was sunk on 27 December 1945 as part of Operation Deadlight.[1]

She was a member of eleven wolfpacks.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-313 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[3] 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).[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, 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-313 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 two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.[3]

Service history

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.

First, second and third patrols

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 seventh. She finished the patrol at Hammerfest on the 29th.

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

Fourth, fifth, sixth and seventh patrols

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.

Eighth, ninth and tenth patrols

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.

Eleventh and twelfth patrols and fate

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]

References

  1. ^ a b Helgason, Guðmundur. "The Type VIIC boat U-313". German U-boats of WWII – uboat.net. Retrieved 17 August 2012.
  2. ^ Helgason, Guðmundur. "War Patrols by German U-boat U-313". German U-boats of WWII – uboat.net. Retrieved 17 August 2012.
  3. ^ a b c d Gröner 1991, pp. 43–46.
  4. ^ Hofmann, Markus. "U 313". Deutsche U-Boote 1935–1945 – u-boot-archiv.de (in German). Retrieved 26 December 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). Der U-Boot-Krieg, 1939-1945: Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945] (in German). Vol. 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. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
  • Helgason, Guðmundur. "The Type VIIC boat U-313". German U-boats of WWII – uboat.net. Retrieved 26 December 2014.
  • Hofmann, Markus. "U 313". Deutsche U-Boote 1935–1945 – u-boot-archiv.de (in German). Retrieved 26 December 2014.

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

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