History
Nazi Germany
Name: U-679
Ordered: 5 June 1941
Builder: Howaldtswerke, Hamburg
Yard number: 828
Laid down: 3 September 1942
Launched: 18 September 1943
Commissioned: 29 November 1943
Fate: Sunk on 9 January 1945 in the Baltic Sea at 59°26′N 24°07′E / 59.433°N 24.117°E / 59.433; 24.117 by depth charges from Soviet A/S vessel MO-124
General characteristics
Class and type: Type VIIC submarine
Displacement:
  • 769 tonnes (757 long tons) surfaced
  • 871 t (857 long tons) submerged
Length:
Beam:
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Draught: 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)
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)
Complement: 4 officers, 40–56 enlisted
Armament:
Service record
Part of:
Commanders:
  • Oblt.z.S. Friedrich Breckwoldt[1]
  • 29 November 1943 – 20 October 1944
  • Oblt.z.S. Eduard Aust[2]
  • 21 October 1944 – 9 January 1945
Operations: 4 patrols
Victories:
  • 1 warship sunk (39 tons)
  • 1 warship damaged (36 tons)

German submarine U-679 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 3 September 1942 by Howaldtswerke-Deutsche Werft, Hamburg as yard number 828, launched on 18 September 1943 and commissioned on 29 November 1943 under Oberleutnant zur See Friedrich Breckwoldt.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-679 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 Siemens-Schuckert GU 343/38-8 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-679 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), one 3.7 cm (1.5 in) Flak M42 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 career began with training at 31st Flotilla on 29 November 1943, followed by active service on 1 August 1944 as part of the 8th Flotilla. U-679 took part in no wolfpacks. U-679 was presumed sunk on 9 January 1945 in the Baltic Sea at 59°26′N 24°07′E / 59.433°N 24.117°E / 59.433; 24.117Coordinates: 59°26′N 24°07′E / 59.433°N 24.117°E / 59.433; 24.117 by depth charges from Soviet anti-submarine vessel MO-124. However, the wreckage was located in August 2015 and initial reports suggest that actually U-679 had run into a mine and sank after that. Wreckage lies at depth of 90 metres at a location, which is somewhat different from the information given earlier.[4][5]

Summary of raiding history

Date Name Nationality Tonnage[Note 1] Fate[6]
15 July 1944 TK-57  Soviet Navy 36 Damaged
18 November 1944 SK-62  Soviet Navy 39 Sunk

References

Notes

  1. ^ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

  1. ^ Helgason, Guðmundur. "Friedrich Breckwoldt". German U-boats of WWII - uboat.net. Retrieved 30 March 2015.
  2. ^ Helgason, Guðmundur. "Eduard Aust". German U-boats of WWII - uboat.net. Retrieved 30 March 2015.
  3. ^ a b c d Gröner 1991, pp. 43-46.
  4. ^ Suunto: www.suunto.com/sports/News-Articles-container-page/U-boat-U679/, accessdate: 17. September 2015
  5. ^ yle.fi: Finnish diver finds sub from WWII | Yle Uutiset | yle.fi, accessdate: 17. September 2015
  6. ^ Helgason, Guðmundur. "Ships hit by U-679". German U-boats of WWII - uboat.net. Retrieved 30 March 2015.

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.
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
  • Kemp, Paul (1997). U-Boats Destroyed – German Submarine Losses in the World Wars. Arms and Armour Press. p. 228. ISBN 1-85409-321-5.
  • Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN 1-85780-072-9.

External links

  • Helgason, Guðmundur. "The Type VIIC U-boat U-679". German U-boats of WWII - uboat.net. Retrieved 30 March 2015.