|Ordered:||10 April 1941|
|Builder:||Deutsche Werft, Hamburg|
|Laid down:||13 March 1942|
|Launched:||26 October 1942|
|Commissioned:||13 January 1943|
|Fate:||Sunk, November 1943 northeast of the Azores by one British and two Canadian warships|
|Class and type:||Type IXC/40 submarine|
|Height:||9.60 m (31 ft 6 in)|
|Draught:||4.67 m (15 ft 4 in)|
|Test depth:||230 m (750 ft)|
|Complement:||4 officers, 44 enlisted|
She carried out two patrols, but did not sink any ships. She was a member of one wolfpack.
German Type IXC/40 submarines were slightly larger than the original Type IXCs. U-536 had a displacement of 1,144 tonnes (1,126 long tons) when at the surface and 1,257 tonnes (1,237 long tons) while submerged. The U-boat had a total length of 76.76 m (251 ft 10 in), a pressure hull length of 58.75 m (192 ft 9 in), a beam of 6.86 m (22 ft 6 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.67 m (15 ft 4 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of 4,400 metric horsepower (3,240 kW; 4,340 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 shaft horsepower (1,010 PS; 750 kW) for use while submerged. She had two shafts and two 1.92 m (6 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).
The submarine had a maximum surface speed of 18.3 knots (33.9 km/h; 21.1 mph) and a maximum submerged speed of 7.3 knots (13.5 km/h; 8.4 mph). When submerged, the boat could operate for 63 nautical miles (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 13,850 nautical miles (25,650 km; 15,940 mi) at 10 knots (19 km/h; 12 mph). U-536 was fitted with six 53.3 cm (21 in) torpedo tubes (four fitted at the bow and two at the stern), 22 torpedoes, one 10.5 cm (4.13 in) SK C/32 naval gun, 180 rounds, and a 3.7 cm (1.5 in) SK C/30 as well as a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of forty-eight.
The boat departed Kiel on 1 June 1943, moved through the North Sea, negotiated the gap between Iceland and the Faroe Islands and entered the Atlantic Ocean. She entered Lorient, on the French Atlantic coast, on 9 July.
2nd patrol and loss
Her second foray took her as far as the Gulf of St. Lawrence, but on the return leg she was sunk on 20 November 1943 northeast of the Azores by depth charges from a British frigate, HMS Nene and two Canadian corvettes, HMCS Snowberry and HMCS Calgary.
Thirty-eight men died; there were seventeen survivors.
U-536 took part in one wolfpack, namely.
- Schill 2 (17–20 November 1943)
- Kemp, Paul (1997). U-Boats Destroyed: German Submarine Losses in the World Wars. Weidenfeld & Nicolson. p. 158. ISBN 978-1-557-50859-1.
- Gröner 1991, p. 68.
- Service Histories of Royal Navy Warships in World War 2 HMS Nene gives gunfire as the cause of the sinking after depth-charging brought the submarine to the surface.
- Kemp 1997, p. 158.
- 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]. 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.
- Kemp, Paul (1997). U-Boats Destroyed - German Submarine Losses in the World Wars. Arms & Armour. ISBN 1-85409-515-3.
- Helgason, Guðmundur. "The Type IXC/40 boat U-536". German U-boats of WWII - uboat.net. Retrieved 7 December 2014.
- Hofmann, Markus. "U 536". Deutsche U-Boote 1935-1945 - u-boot-archiv.de (in German). Retrieved 1 February 2015.