German submarine U-566 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

She was scuttled by her crew on 24 October 1943 after being damaged by six depth charges from a British Wellington aircraft in the North Atlantic west of Portugal, in position 41°12′N 9°31′W / 41.200°N 9.517°W / 41.200; -9.517.

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 Brown, Boveri & Cie GG UB 720/8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged.

Her fourth sortie was marked with the sinking of the Meropi on 14 February 1942 35 nautical miles (65 km; 40 mi) east-southeast of the Sambro light-house in Nova Scotia.

She sank the Westmorland on 1 June 240 nautical miles (440 km; 280 mi) north-northeast of Bermuda, using a torpedo and her deck gun.

[2] The boat's seventh foray was rewarded with the sinking of the Glenlea on 7 November in mid-Atlantic, but she was attacked and severely damaged by a Hudson of No.

[2] She sank the USS Plymouth on 120 nautical miles (220 km; 140 mi) southeast of Cape Henry, Virginia on 5 August 1943, but was attacked by a Lockheed Ventura from United States Navy Squadron VP-128[2] 300 nautical miles (560 km; 350 mi) east of Cape Charles, also in Virginia, on 7 August 1943.