Name U-3520 Yard number 1665 Commissioned 12 January 1945 Launched 23 November 1944 Builder Schichau-Werke | Ordered 6 November 1943 Laid down 20 September 1944 Construction started 20 September 1944 Draft 6.32 m | |
Fate Sunk on 12 January 1945 | ||
German submarine U-3520 was a Type XXI U-boat (one of the "Elektroboote") of Nazi Germany's Kriegsmarine, built for service in World War II. She was ordered on 6 November 1943, and was laid down on 20 September 1944 at F Schichau GmbH, Danzig, as yard number 1665. She was launched on 23 November 1944, and commissioned under the command of Kapitänleutnant Sarto Ballert, on 12 January 1945.
Contents
Design
Like all Type XXI U-boats, U-3520 had a displacement of 1,621 tonnes (1,595 long tons) when at the surface and 1,819 tonnes (1,790 long tons) while submerged. She had a total length of 76.70 m (251 ft 8 in) (o/a), a beam length of 8 m (26 ft 3 in), and a draught length of 6.32 m (20 ft 9 in). The submarine was powered by two MAN SE supercharged six-cylinder M6V40/46KBB diesel engines each providing 4,000 metric horsepower (2,900 kilowatts; 3,900 shaft horsepower), two Siemens-Schuckert GU365/30 double-acting electric motors each providing 5,000 PS (3,700 kW; 4,900 shp), and two Siemens-Schuckert silent running GV232/28 electric motors each providing 226 PS (166 kW; 223 shp).
The submarine had a maximum surface speed of 15.6 knots (28.9 km/h; 18.0 mph) and a submerged speed of 17.2 knots (31.9 km/h; 19.8 mph). When running on silent motors the boat could operate at a speed of 6.1 knots (11.3 km/h; 7.0 mph). When submerged, the boat could operate at 5 knots (9.3 km/h; 5.8 mph) for 340 nautical miles (630 km; 390 mi); when surfaced, she could travel 15,500 nautical miles (28,700 km; 17,800 mi) at 10 knots (19 km/h; 12 mph). U-3520 was fitted with six 53.3 cm (21.0 in) torpedo tubes in the bow and four 2 cm (0.8 in) anti-aircraft guns. She could carry twenty-three torpedoes or seventeen torpedoes and twelve mines. The complement was five officers and fifty-two men.
Fate
U-3520 was sunk by mines on 31 January 1945, northeast of Bülk, in the Baltic Sea. None of the crew of 85 survived.
The wreck is located at 54°28′N 10°12′E.