|Ordered:||15 August 1940|
|Builder:||Deutsche Werft, Hamburg|
|Laid down:||14 October 1941|
|Launched:||3 June 1942|
|Commissioned:||12 August 1942|
|Fate:||Sunk by mines in the Bay of Biscay, April 1943|
|Class and type:||Type IXC/40 submarine|
|Beam:||6.86 m (22 ft 6 in) o/a 4.44 m (14 ft 7 in) pressure hull|
|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|
|Operations:||11 February – 14 April 1943|
Her keel was laid down on 14 October 1941 by the Deutsche Werft in Hamburg as yard number 341. She was launched on 3 June 1942 and commissioned on 12 August with Kapitänleutnant Hans Möglich in command.
She was a member of four wolfpacks.
She carried out one patrol and sank no ships.
She was sunk by mines in the Bay of Biscay on 14 April 1943.
German Type IXC/40 submarines were slightly larger than the original Type IXCs. U-526 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-526 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 submarine's only patrol was preceded by short passages from Kiel in Germany to Kristiansand then Bergen in Norway over January 1943. She left Bergen and sailed across the North Sea and into the Atlantic Ocean through the 'gap' between Iceland and the Faroe Islands. Following extensive sweeps in the middle of the North Atlantic, she was crossing the Bay of Biscay and had almost reached Lorient when she encountered mines and was sunk. Forty-two men died, but there were twelve survivors.