German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-635 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 superchargeddiesel 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-635 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 one twin 2 cm (0.79 in) C/30anti-aircraft gun. The boat had a complement of between forty-four and sixty.[2]
Service history
The boat's career began with training at 5th U-boat Flotilla on 13 August 1942, followed by active service on 1 April 1943 as part of the 3rd Flotilla for the remainder of her very short service.
In one patrol she damaged two merchant ships, for a total of 14,894 gross register tons (GRT).
At 22:15 on 4 April, U-635’s torpedoes struck the lead ship of the column, the British freighter Shillong. U-630 delivered the coup de grâce. She took only 12 minutes to sink.
The next target was the British refrigerated ship Waroonga, whose cargo included butter and meat from New Zealand. She was hit with 2 torpedoes, but stayed afloat thanks to the integrity of her watertight bulkheads. However, it wasn't to last as she too was despatched by U-630[citation needed] the following day.
^Helgason, Guðmundur. "Ships hit by U-635". German U-boats of WWII - uboat.net. Retrieved 5 November 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. ISBN1-55750-186-6.
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. ISBN3-8132-0514-2.
Edwards, Bernard (1996). Dönitz and the Wolfpacks - The U-boats at War. pp. 179, 180, 184. ISBN0-304-35203-9.
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. ISBN0-85177-593-4.
Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN1-85780-072-9.
External links
Helgason, Guðmundur. "The Type VIIC boat U-635". 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, october, 1941, blohm, voss, hamburg, yard, number, launched, june, 1942, commissioned, august, 1942, under, oberleutnant, heinz, eckelmann, historynazi. German submarine U 635 was a Type VIIC U boat built for Nazi Germany s Kriegsmarine for service during World War II She was laid down on 3 October 1941 by Blohm amp Voss Hamburg as yard number 611 launched on 24 June 1942 and commissioned on 13 August 1942 under Oberleutnant zur See Heinz Eckelmann HistoryNazi GermanyNameU 635Ordered20 January 1941BuilderBlohm amp Voss HamburgYard number611Laid down3 October 1941Launched24 June 1942Commissioned13 August 1942FateSunk on 5 April 1943 in the North Atlantic in position 58 20 N 31 52 W 58 333 N 31 867 W 58 333 31 867 Coordinates 58 20 N 31 52 W 58 333 N 31 867 W 58 333 31 867 by depth charges from a RAF Liberator 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 hullDraught4 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 4 bow 1 stern 14 torpedoes or 26 TMA mines 1 8 8 cm 3 46 in deck gun 220 rounds 1 twin 2 cm 0 79 in C 30 anti aircraft gunService record 1 Part of 5th U boat Flotilla 13 August 1942 31 March 1943 3rd U boat Flotilla 1 5 April 1943Commanders Oblt z S Heinz Eckelmann 13 August 1942 5 April 1943Operations 1 patrol 16 March 5 April 1943Victories 2 merchant ships damaged 14 894 GRT Contents 1 Design 2 Service history 2 1 Convoy HX 231 2 2 Fate 2 3 Wolfpacks 3 Summary of raiding history 4 References 5 Bibliography 6 External linksDesign EditGerman Type VIIC submarines were preceded by the shorter Type VIIB submarines U 635 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 635 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 one twin 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 career began with training at 5th U boat Flotilla on 13 August 1942 followed by active service on 1 April 1943 as part of the 3rd Flotilla for the remainder of her very short service In one patrol she damaged two merchant ships for a total of 14 894 gross register tons GRT Convoy HX 231 Edit In April 1943 U 635 joined the wolfpack Lowenherz and attacked the Eastbound convoy HX 231 bound for Liverpool from Halifax Nova Scotia At 22 15 on 4 April U 635 s torpedoes struck the lead ship of the column the British freighter Shillong U 630 delivered the coup de grace She took only 12 minutes to sink The next target was the British refrigerated ship Waroonga whose cargo included butter and meat from New Zealand She was hit with 2 torpedoes but stayed afloat thanks to the integrity of her watertight bulkheads However it wasn t to last as she too was despatched by U 630 citation needed the following day Fate Edit U 635 was sunk on 5 April 1943 in the North Atlantic in position 58 20 N 31 52 W 58 333 N 31 867 W 58 333 31 867 by depth charges from RAF Liberator of 120 Squadron All hands were lost Wolfpacks Edit U 635 took part in one wolfpack namely Lowenherz 1 5 April 1943 Summary of raiding history EditDate Ship Name Nationality Tonnage GRT Fate 3 4 April 1943 Shillong United Kingdom 5 529 Damaged4 April 1943 Waroonga United Kingdom 9 365 DamagedReferences Edit Helgason Gudmundur The Type VIIC boat U 635 German U boats of WWII uboat net Retrieved 5 November 2014 a b c d Groner 1991 pp 43 46 Helgason Gudmundur Ships hit by U 635 German U boats of WWII uboat net Retrieved 5 November 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 Der U Boot Krieg in German Vol IV Hamburg Berlin Bonn Mittler ISBN 3 8132 0514 2 Edwards Bernard 1996 Donitz and the Wolfpacks The U boats at War pp 179 180 184 ISBN 0 304 35203 9 Groner 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 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 635 German U boats of WWII uboat net Retrieved 29 December 2014 Portals Military of Germany World War II Retrieved from https en wikipedia org w index php title German submarine U 635 amp oldid 1075919010, wikipedia, wiki, book, books, library,
