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German submarine U-391

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History
Nazi Germany
NameU-391
Ordered20 January 1941
BuilderHowaldtswerke, Kiel
Yard number23
Laid down9 January 1942
Launched5 March 1943
Commissioned24 April 1943
FateSunk on 13 December 1943, by a British aircraft northwest of Cape Ortegal, Spain
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]
Part of:
Identification codes: M 22 133
Commanders:
  • Oblt.z.S. Gert Dültgen
  • 24 April – 13 December 1943
Operations:
  • 1 patrol:
  • 23 October – 13 December 1943
Victories: None

German submarine U-391 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

She carried out one patrol. She did not sink or damage any ships.

She was sunk by a British aircraft northwest of Cape Ortegal in Spain on 13 December 1943.[1]

Design

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German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-391 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 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).[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-391 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.[2]

Service history

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The submarine was laid down on 9 January 1942 at the Howaldtswerke (yard) at Flensburg as yard number 23, launched on 5 March and commissioned on 24 April 1943 under the command of Oberleutnant zur See Gert Dültgen.

The boat was a member of three wolfpacks.

She served with the 5th U-boat Flotilla from 24 April 1943 and the 3rd flotilla from 1 October of the same year.

Patrol and loss

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The boat departed Kiel on 23 October 1943. Passing through the gap that separates Iceland and the Faroe Islands, she was attacked by a Vickers Wellington of No. 179 Squadron RAF on 28 November.

On 13 December, she was attacked and sunk by depth charges dropped from a British B-24 Liberator of 53 Squadron on the western edge of the Bay of Biscay, northwest of Cape Ortegal in Spain.

51 men died in the U-boat; there were no survivors.

Wolfpacks

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U-391 took part in three wolfpacks, namely:

  • Eisenhart 1 (9 – 15 November 1943)
  • Schill 3 (18 – 22 November 1943)
  • Weddigen (22 November – 7 December 1943)

References

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  1. ^ a b Helgason, Guðmundur. "The Type VIIC boat U-391". German U-boats of WWII – uboat.net. Retrieved 9 September 2012.
  2. ^ a b c d Gröner 1991, pp. 43–46.

Bibliography

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  • 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). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945]. Der U-Boot-Krieg (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.
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