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German submarine U-624

German submarine U-624 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 15 July 1941 by Blohm & Voss in Hamburg as yard number 600, launched on 31 March 1942 and commissioned on 28 May 1942 under Kapitänleutnant Ulrich Graf von Soden-Fraunhofen.

History
Nazi Germany
NameU-624
Ordered15 August 1940
BuilderBlohm & Voss, Hamburg
Yard number600
Laid down15 July 1941
Launched31 March 1942
Commissioned28 May 1942
FateSunk on 7 February 1943 in the North Atlantic in position 55°42′N 26°17′W / 55.700°N 26.283°W / 55.700; -26.283, by a RAF B-17 Flying Fortress aircraft.
General characteristics
Class and typeType 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
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:
Commanders:
  • Kptlt. Ulrich Graf von Soden-Fraunhofen
  • 28 May 1942 – 7 February 1943
Operations:
  • 2 patrols:
  • 1st patrol:
  • 10 October – 4 December 1942
  • 2nd patrol:
  • 7 January – 7 February 1943
Victories:
  • 5 merchant ships sunk
    (39,855 GRT)
  • 3 warships sunk
    (873 tons)
  • 1 merchant ship damaged
    (5,432 GRT)

Design edit

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-624 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 Brown, Boveri & Cie GG UB 720/8 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).[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-624 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 a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.[2]

Service history edit

The boat's service began on 28 May 1942 with training as part of the 8th U-boat Flotilla. She was transferred to the 7th Flotilla, operating out of St.Nazaire, on 1 October 1942 for active service in the North Atlantic .

In just two patrols she sank five merchant ships and three warships for a total of 39,855 gross register tons (GRT) and 873 tons, plus one merchant ship damaged.

Fate edit

U-624 was sunk on 7 February 1943 in the North Atlantic in position 55°42′N 26°17′W / 55.700°N 26.283°W / 55.700; -26.283. She was caught unawares on the surface whilst transmitting to base a lengthy report of the previous night's action around Convoy SC 118. A RAF B-17 Flying Fortress aircraft of (Sqdn. 220/J), operating out of Londonderry Port, depth charged her 55 nautical miles (102 km; 63 mi) astern of the convoy. All 45 hands were lost.

Wolfpacks edit

U-624 took part in five wolfpacks, namely:

  • Puma (23 – 29 October 1942)
  • Natter (30 October – 8 November 1942)
  • Kreuzotter (8 – 24 November 1942)
  • Habicht (10 – 19 January 1943)
  • Haudegen (19 January – 7 February 1943)

Summary of raiding history edit

Date Ship Name Nationality Tonnage[Note 1] Fate[3]
29 October 1942 Kosmos II   Norway 16,966 Sunk
29 October 1942 HMS LCT-2190[Note 2]   Royal Navy 291 Sunk
29 October 1942 HMS LCT-2192[Note 2]   Royal Navy 291 Sunk
29 October 1942 HMS LCT-2284[Note 2]   Royal Navy 291 Sunk
29 October 1942 Pan-New York   United States 7,701 Sunk
18 November 1942 President Sergent   United Kingdom 5,344 Sunk
18 November 1942 Parismina   United States 4,732 Sunk
18 November 1942 Yaka   United States 5,432 Damaged
25 January 1943 Lackenby   United Kingdom 5,112 Sunk

References edit

Notes edit

  1. ^ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.
  2. ^ a b c Being carried by Kosmos II

Citations edit

  1. ^ Helgason, Guðmundur. "The Type VIIC boat U-624". German U-boats of WWII - uboat.net. Retrieved 20 May 2014.
  2. ^ a b c d Gröner 1991, pp. 43–46.
  3. ^ Helgason, Guðmundur. "Ships hit by U-624". German U-boats of WWII - uboat.net. Retrieved 20 May 2014.

Bibliography edit

  • 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] (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2. {{cite book}}: |work= ignored (help)
  • Edwards, Bernard (1996). Dönitz and the Wolf Packs - The U-boats at War. pp. 148–149. ISBN 0-304-35203-9.
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4. {{cite book}}: |work= ignored (help)
  • Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN 1-85780-072-9.

External links edit

  • Helgason, Guðmundur. "The Type VIIC boat U-624". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.

german, submarine, type, viic, boat, built, nazi, germany, kriegsmarine, service, during, world, laid, down, july, 1941, blohm, voss, hamburg, yard, number, launched, march, 1942, commissioned, 1942, under, kapitänleutnant, ulrich, graf, soden, fraunhofen, his. German submarine U 624 was a Type VIIC U boat built for Nazi Germany s Kriegsmarine for service during World War II She was laid down on 15 July 1941 by Blohm amp Voss in Hamburg as yard number 600 launched on 31 March 1942 and commissioned on 28 May 1942 under Kapitanleutnant Ulrich Graf von Soden Fraunhofen HistoryNazi GermanyNameU 624Ordered15 August 1940BuilderBlohm amp Voss HamburgYard number600Laid down15 July 1941Launched31 March 1942Commissioned28 May 1942FateSunk on 7 February 1943 in the North Atlantic in position 55 42 N 26 17 W 55 700 N 26 283 W 55 700 26 283 by a RAF B 17 Flying Fortress aircraft General characteristicsClass and typeType VIIC submarineDisplacement769 tonnes 757 long tons surfaced 871 t 857 long tons submergedLength67 10 m 220 ft 2 in o a 50 50 m 165 ft 8 in pressure hullBeam6 20 m 20 ft 4 in o a 4 70 m 15 ft 5 in pressure hullHeight9 60 m 31 ft 6 in Draught4 74 m 15 ft 7 in Installed power2 800 3 200 PS 2 100 2 400 kW 2 800 3 200 bhp diesels 750 PS 550 kW 740 shp electric Propulsion2 shafts 2 diesel engines 2 electric motorsSpeed17 7 knots 32 8 km h 20 4 mph surfaced 7 6 knots 14 1 km h 8 7 mph submergedRange8 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 submergedTest depth230 m 750 ft Crush depth 250 295 m 820 968 ft Complement4 officers 40 56 enlistedArmament5 53 3 cm 21 in torpedo tubes four bow one stern 14 torpedoes or 26 TMA mines 1 8 8 cm 3 46 in deck gun 220 rounds 1 x 2 cm 0 79 in C 30 AA gunService record 1 Part of 8th U boat Flotilla 28 May 30 September 1942 7th U boat Flotilla 1 October 1942 7 February 1943Commanders Kptlt Ulrich Graf von Soden Fraunhofen 28 May 1942 7 February 1943Operations 2 patrols 1st patrol 10 October 4 December 1942 2nd patrol 7 January 7 February 1943Victories 5 merchant ships sunk 39 855 GRT 3 warships sunk 873 tons 1 merchant ship damaged 5 432 GRT Contents 1 Design 2 Service history 2 1 Fate 2 2 Wolfpacks 3 Summary of raiding history 4 References 4 1 Notes 4 2 Citations 5 Bibliography 6 External linksDesign editGerman Type VIIC submarines were preceded by the shorter Type VIIB submarines U 624 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 Brown Boveri amp Cie GG UB 720 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 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 624 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 a 2 cm 0 79 in C 30 anti aircraft gun The boat had a complement of between forty four and sixty 2 Service history editThe boat s service began on 28 May 1942 with training as part of the 8th U boat Flotilla She was transferred to the 7th Flotilla operating out of St Nazaire on 1 October 1942 for active service in the North Atlantic In just two patrols she sank five merchant ships and three warships for a total of 39 855 gross register tons GRT and 873 tons plus one merchant ship damaged Fate edit U 624 was sunk on 7 February 1943 in the North Atlantic in position 55 42 N 26 17 W 55 700 N 26 283 W 55 700 26 283 She was caught unawares on the surface whilst transmitting to base a lengthy report of the previous night s action around Convoy SC 118 A RAF B 17 Flying Fortress aircraft of Sqdn 220 J operating out of Londonderry Port depth charged her 55 nautical miles 102 km 63 mi astern of the convoy All 45 hands were lost Wolfpacks edit U 624 took part in five wolfpacks namely Puma 23 29 October 1942 Natter 30 October 8 November 1942 Kreuzotter 8 24 November 1942 Habicht 10 19 January 1943 Haudegen 19 January 7 February 1943 Summary of raiding history editDate Ship Name Nationality Tonnage Note 1 Fate 3 29 October 1942 Kosmos II nbsp Norway 16 966 Sunk29 October 1942 HMS LCT 2190 Note 2 nbsp Royal Navy 291 Sunk29 October 1942 HMS LCT 2192 Note 2 nbsp Royal Navy 291 Sunk29 October 1942 HMS LCT 2284 Note 2 nbsp Royal Navy 291 Sunk29 October 1942 Pan New York nbsp United States 7 701 Sunk18 November 1942 President Sergent nbsp United Kingdom 5 344 Sunk18 November 1942 Parismina nbsp United States 4 732 Sunk18 November 1942 Yaka nbsp United States 5 432 Damaged25 January 1943 Lackenby nbsp United Kingdom 5 112 SunkReferences editNotes edit Merchant ship tonnages are in gross register tons Military vessels are listed by tons displacement a b c Being carried by Kosmos II Citations edit Helgason Gudmundur The Type VIIC boat U 624 German U boats of WWII uboat net Retrieved 20 May 2014 a b c d Groner 1991 pp 43 46 Helgason Gudmundur Ships hit by U 624 German U boats of WWII uboat net Retrieved 20 May 2014 Bibliography editBusch Rainer Roll 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 Roll Hans Joachim 1999 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 a href Template Cite book html title Template Cite book cite book a work ignored help Edwards Bernard 1996 Donitz and the Wolf Packs The U boats at War pp 148 149 ISBN 0 304 35203 9 Groner Erich Jung Dieter Maass Martin 1991 U boats and Mine Warfare Vessels Vol 2 Translated by Thomas Keith Magowan Rachel London Conway Maritime Press ISBN 0 85177 593 4 a href Template Cite book html title Template Cite book cite book a work ignored help Sharpe Peter 1998 U Boat Fact File Great Britain Midland Publishing ISBN 1 85780 072 9 External links editHelgason Gudmundur The Type VIIC boat U 624 German U boats of WWII uboat net Retrieved 29 December 2014 Portals nbsp Military of Germany nbsp World War II Retrieved from https en wikipedia org w index php title German submarine U 624 amp oldid 1162234636, wikipedia, wiki, book, books, library,

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