German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-764 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 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-764 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.[2]
Service history
The boat's career began with training at 8th U-boat Flotilla on 6 May 1943, followed by active service on 1 November 1943 as part of the 9th Flotilla in Brest, France. On 1 October 1944, she transferred to 11th Flotilla in Bergen, Norway; as the situation worsened in France following the invasion. She remained with 11th Flotilla until her surrender at the end of the war.
In eight patrols she sank one merchant ship, for a total of 638 gross register tons (GRT), and 2 warships sunk (1,696 tons).
^Helgason, Guðmundur. "Ships hit by U-764". German U-boats of WWII - uboat.net. Retrieved 10 September 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.
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-764". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.
Hofmann, Markus. "U 764". Deutsche U-Boote 1935-1945 - u-boot-archiv.de (in German). Retrieved 29 December 2014.
german, submarine, type, viic, boat, built, nazi, germany, kriegsmarine, service, during, world, laid, down, february, 1941, kriegsmarinewerft, wilhelmshaven, yard, number, launched, march, 1943, commissioned, 1943, under, oberleutnant, hanskurt, bremen, histo. German submarine U 764 was a Type VIIC U boat built for Nazi Germany s Kriegsmarine for service during World War II She was laid down on 1 February 1941 by Kriegsmarinewerft Wilhelmshaven as yard number 147 launched on 13 March 1943 and commissioned on 6 May 1943 under Oberleutnant zur See Hanskurt von Bremen HistoryNazi GermanyNameU 764Ordered15 August 1940BuilderKriegsmarinewerft WilhelmshavenYard number147Laid down1 February 1941Launched13 March 1943Commissioned6 May 1943FateSurrendered on 14 May 1945 at Loch Eriboll Scotland She was later sunk as part of Operation Deadlight in position 56 06 N 09 00 W 56 100 N 9 000 W 56 100 9 000 Coordinates 56 06 N 09 00 W 56 100 N 9 000 W 56 100 9 000 on 2 February 1946 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 Complement4officers 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 record 1 Part of 8th U boat Flotilla 6 May 31 October 1943 9th U boat Flotilla 1 November 1943 30 September 1944 11th U boat Flotilla 1 October 1944 8 May 1945Commanders Oblt z S Hanskurt von Bremen 6 May 1943 14 May 1945Operations 8 patrols 1st patrol 26 October 11 December 1943 2nd patrol 17 January 15 March 1944 3rd patrol a 26 28 April 1944 b 18 28 May 1944 4th patrol 6 23 June 1944 5th patrol 6 August 19 September 1944 6th patrol a 26 December 1944 4 February 1945 b 15 18 March 1945 7th patrol 19 23 March 1945 8th patrol 26 April 14 May 1945Victories 1 merchant ship sunk 638 GRT 2 warships sunk 1 696 tons Contents 1 Design 2 Service history 2 1 Wolfpacks 2 2 Fate 3 Summary of raiding history 4 See also 5 References 5 1 Notes 5 2 Citations 6 Bibliography 7 External linksDesign EditGerman Type VIIC submarines were preceded by the shorter Type VIIB submarines U 764 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 amp 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 764 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 EditThe boat s career began with training at 8th U boat Flotilla on 6 May 1943 followed by active service on 1 November 1943 as part of the 9th Flotilla in Brest France On 1 October 1944 she transferred to 11th Flotilla in Bergen Norway as the situation worsened in France following the invasion She remained with 11th Flotilla until her surrender at the end of the war In eight patrols she sank one merchant ship for a total of 638 gross register tons GRT and 2 warships sunk 1 696 tons Wolfpacks Edit U 764 took part in eight wolfpacks namely Eisenhart 3 9 15 November 1943 Schill 3 18 22 November 1943 Weddigen 22 29 November 1943 Hinein 26 January 3 February 1944 Igel 1 3 17 February 1944 Hai 1 17 22 February 1944 Preussen 22 February 13 March 1944 Dragoner 21 28 May 1944 Fate Edit U 764 surrendered on 14 May 1945 at Loch Eriboll Scotland She was sunk as a target in position 56 06 N 09 00 W 56 100 N 9 000 W 56 100 9 000 as part of Operation Deadlight on 2 February 1946 Summary of raiding history EditDate Ship Name Nationality Tonnage Note 1 Fate 3 15 June 1944 HMS Blackwood Royal Navy 1 085 Sunk20 August 1944 Coral United Kingdom 638 Sunk25 August 1944 HMS LCT 1074 Royal Navy 611 SunkSee also EditConvoy SL 140 MKS 31References EditNotes Edit Merchant ship tonnages are in gross register tons Military vessels are listed by tons displacement Citations Edit Helgason Gudmundur The Type VIIC boat U 764 German U boats of WWII uboat net Retrieved 10 September 2014 a b c d Groner 1991 pp 43 46 Helgason Gudmundur Ships hit by U 764 German U boats of WWII uboat net Retrieved 10 September 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 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 764 German U boats of WWII uboat net Retrieved 29 December 2014 Hofmann Markus U 764 Deutsche U Boote 1935 1945 u boot archiv de in German Retrieved 29 December 2014 Portals Military of Germany World War II Retrieved from https en wikipedia org w index php title German submarine U 764 amp oldid 1079364089, wikipedia, wiki, book, books, library,
