German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-735 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[1] 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 AEG GU 460/8–27 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).[1]
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).[1] 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-735 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/30anti-aircraft guns. The boat had a complement of between forty-four and sixty.[1]
Service historyEdit
U-735 served as a training boat preparing U-boat crews for service in the Atlantic Ocean. Her home base was Horten Naval Base in Norway, from which she operated on short coastal patrols, practicing in fjords and channels for submarine warfare. A Type VIIC U-boat, U-735 was very useful for preparing sailors and officers for service in modern boats, as opposed to the new models usually used in training.
Commissioned at Christmas 1942 in Danzig after an exceptionally long building period, U-735 was given to Oberleutnant zur See Hans-Joachim Börner, who remained in command of the boat right up to her destruction exactly two years later, when he was killed on board his ship. Dispatched to Norway, Börner soon became an expert on the Norwegian seaways, and was able to train a large number of sailors on his practice missions from Horten.
On the 28 December 1944, RAF Bomber Command sought to eradicate the menace of submarines sailing from Norwegian bases, and launched a major raid on Horten with 57 Avo Lancaster bombers. U-735 was anchored in the naval harbour at Horten. When the air raid alarm came at 21.30, U-735 eventually succeeded in leaving the harbour, having had trouble starting her diesels. At 23.30 NE of Horten she caught the full force of a bomb, sinking just outside the harbour, south of Mølen Island, with 26 men killed and ten missing, including her captain. Only one crew member survived, plus ten crew members who were on leave in Horten. She was the only U-boat to be lost in the attack. The wreck was rediscovered in a depth of 190 meters by a Royal Norwegian Navy divers from sub-sea surveillance ship, HNoMS Tyr in 1999. A high-resolution SAS image of the wreck which is in upright position made the cover of Sea Technology Magazine in June 2006 [1] 7 June 2012 at the Wayback Machine, and another SAS image of U-735 [2] is made available by the Norwegian Defence Reseasrch Establishment. Two other ships were also sunk in the air attack: Holmengraa and Nordvard.
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]. ISBN3-8132-0514-2. {{cite book}}: |work= ignored (help)
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. ISBN0-85177-593-4. {{cite book}}: |work= ignored (help)
Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN1-85780-072-9.
External linksEdit
Helgason, Guðmundur. "The Type VIIC boat U-735". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.
"Memories from U-735", sole survivor (in German) Die Versenkung von U-735 - Ein Zeitzeugenbericht des einzigen Überlebenden 1944 - YouTube
german, submarine, type, viic, boat, built, nazi, germany, kriegsmarine, service, during, world, historynazi, germanynameu, 735ordered10, april, 1941builderschichau, werke, danzigyard, number1532laid, down29, november, 1941launched10, october, 1942commissioned. German submarine U 735 was a Type VIIC U boat built for Nazi Germany s Kriegsmarine for service during World War II HistoryNazi GermanyNameU 735Ordered10 April 1941BuilderSchichau Werke DanzigYard number1532Laid down29 November 1941Launched10 October 1942Commissioned28 December 1942FateSunk on 28 December 1944General 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 1 8 8 cm 3 46 in deck gun 220 rounds 2 twin 2 cm 0 79 in C 30 anti aircraft gunsService recordPart of 8th U boat Flotilla 28 December 1942 31 July 1944 11th U boat Flotilla 1 August 28 December 1944Commanders Oblt z S Hans Joachim Borner 28 December 1942 28 December 1944Operations NoneVictories None Contents 1 Design 2 Service history 3 References 4 Bibliography 5 External linksDesign EditGerman Type VIIC submarines were preceded by the shorter Type VIIB submarines U 735 had a displacement of 769 tonnes 757 long tons when at the surface and 871 tonnes 857 long tons while submerged 1 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 AEG GU 460 8 27 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 1 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 1 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 735 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 1 Service history EditU 735 served as a training boat preparing U boat crews for service in the Atlantic Ocean Her home base was Horten Naval Base in Norway from which she operated on short coastal patrols practicing in fjords and channels for submarine warfare A Type VIIC U boat U 735 was very useful for preparing sailors and officers for service in modern boats as opposed to the new models usually used in training Commissioned at Christmas 1942 in Danzig after an exceptionally long building period U 735 was given to Oberleutnant zur See Hans Joachim Borner who remained in command of the boat right up to her destruction exactly two years later when he was killed on board his ship Dispatched to Norway Borner soon became an expert on the Norwegian seaways and was able to train a large number of sailors on his practice missions from Horten On the 28 December 1944 RAF Bomber Command sought to eradicate the menace of submarines sailing from Norwegian bases and launched a major raid on Horten with 57 Avo Lancaster bombers U 735 was anchored in the naval harbour at Horten When the air raid alarm came at 21 30 U 735 eventually succeeded in leaving the harbour having had trouble starting her diesels At 23 30 NE of Horten she caught the full force of a bomb sinking just outside the harbour south of Molen Island with 26 men killed and ten missing including her captain Only one crew member survived plus ten crew members who were on leave in Horten She was the only U boat to be lost in the attack The wreck was rediscovered in a depth of 190 meters by a Royal Norwegian Navy divers from sub sea surveillance ship HNoMS Tyr in 1999 A high resolution SAS image of the wreck which is in upright position made the cover of Sea Technology Magazine in June 2006 1 Archived 7 June 2012 at the Wayback Machine and another SAS image of U 735 2 is made available by the Norwegian Defence Reseasrch Establishment Two other ships were also sunk in the air attack Holmengraa and Nordvard References Edit a b c d Groner 1991 pp 43 46 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 ISBN 3 8132 0514 2 a href Template Cite book html title Template Cite book cite book a work ignored help Groner Erich Jung Dieter Maass Martin 1991 U boats and Mine Warfare Vessels 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 735 German U boats of WWII uboat net Retrieved 29 December 2014 Memories from U 735 sole survivor in German Die Versenkung von U 735 Ein Zeitzeugenbericht des einzigen Uberlebenden 1944 YouTube Portals nbsp Military of Germany nbsp World War II Retrieved from https en wikipedia org w index php title German submarine U 735 amp oldid 1103094901, wikipedia, wiki, book, books, library,
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