German submarine U-765

















































































































History

Nazi Germany
Name:
U-765
Ordered:
15 August 1940
Builder:
Kriegsmarinewerft, Wilhelmshaven
Yard number:
148
Laid down:
15 February 1941
Launched:
22 April 1943
Commissioned:
19 June 1943
Fate:
Sunk, 6 May 1944
General characteristics
Class and type:
Type VIIC submarine
Displacement:

  • 769 tonnes (757 long tons) surfaced

  • 871 t (857 long tons) submerged


Length:

  • 67.10 m (220 ft 2 in) o/a

  • 50.50 m (165 ft 8 in) pressure hull


Beam:

  • 6.20 m (20 ft 4 in) o/a

  • 4.70 m (15 ft 5 in) pressure hull


Height:
9.60 m (31 ft 6 in)
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:

  • 2 shafts

  • 2 × diesel engines

  • 2 × electric motors


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:

  • 5 × 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 guns


Service record
Part of:


  • Kriegsmarine:


  • 8th U-boat Flotilla (Training)

  • 19 June 1943 - 31 March 1944

  • 7th U-boat Flotilla

  • 1 April - 6 May 1944


Commanders:


  • Oblt.z.S. Werner Wendt

  • 19 June 1943 - 6 May 1944


Operations:
1 April - 6 May 1944
Victories:
None

German submarine U-765 was a German Type VII U-boat created for service in World War II. U-765 was notable for not suffering any casualties until the time of her sinking. The U-boat did not sink or damage any ships.




Contents






  • 1 Design


  • 2 Fate


  • 3 References


  • 4 Bibliography


  • 5 External links





Design


German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-765 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 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).[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-765 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]



Fate


U-765 was sunk on 6 May 1944 in the North Atlantic, in position 52°30′N 28°28′W / 52.500°N 28.467°W / 52.500; -28.467, by depth charges from two Swordfish aircraft of 825 Naval Air Squadron from the British Escort Carrier HMS Vindex, operating alongside the British frigates Aylmer, Bligh and Bickerton. The attack left 37 dead and 11 survivors.



References





  1. ^ abcd Gröner 1991, pp. 43-46.




Bibliography


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  • 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..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  • 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). IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2.


  • 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.




External links




  • Helgason, Guðmundur. "The Type VIIC boat U-765". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.


  • Hofmann, Markus. "U 765". Deutsche U-Boote 1935-1945 - u-boot-archiv.de (in German). Retrieved 29 December 2014.















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