German submarine U-521

U-505, a typical Type IXC boat
History
Nazi Germany
Name	U-521
Ordered	14 February 1940
Builder	Deutsche Werft, Hamburg
Yard number	336
Laid down	3 July 1941
Launched	17 March 1942
Commissioned	3 June 1942
Fate	Sunk on 2 June 1943[1]
General characteristics
Class and type	Type IXC submarine
Displacement	1,120 t (1,100 long tons) surfaced 1,232 t (1,213 long tons) submerged
Length	76.76 m (251 ft 10 in) o/a 58.75 m (192 ft 9 in) pressure hull
Beam	6.76 m (22 ft 2 in) o/a 4.40 m (14 ft 5 in) pressure hull
Height	9.60 m (31 ft 6 in)
Draught	4.70 m (15 ft 5 in)
Installed power	4,400 PS (3,200 kW; 4,300 bhp) (diesels) 1,000 PS (740 kW; 990 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	18.3 knots (33.9 km/h; 21.1 mph) surfaced 7.3 knots (13.5 km/h; 8.4 mph) submerged
Range	13,450 nmi (24,910 km; 15,480 mi) at 10 knots (19 km/h; 12 mph) surfaced 64 nmi (119 km; 74 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	230 m (750 ft)
Complement	4 officers, 44 enlisted
Armament	6 × torpedo tubes (4 bow, 2 stern) 22 × 53.3 cm (21 in) torpedoes 1 × 10.5 cm (4.1 in) SK C/32 deck gun (180 rounds) 1 × 3.7 cm (1.5 in) SK C/30 AA gun 1 × twin 2 cm FlaK 30 AA guns
Service record[2][3]
Part of:	4th U-boat Flotilla 3 June – 30 September 1942 2nd U-boat Flotilla 1 October 1942 – 2 June 1943
Identification codes:	M 46 411
Commanders:	Kptlt. Klaus Bargsten 3 June 1942 – 2 June 1943
Operations:	3 patrols: 1st patrol: 6 October – 8 December 1942 2nd patrol: 7 January – 26 March 1943 3rd patrol: 5 May – 2 June 1943
Victories:	3 merchant ships sunk (19,551 GRT) 1 auxiliary warship sunk (750 GRT)

German submarine U-521 was a Type IXC U-boat of Nazi Germany's Kriegsmarine during World War II.

She was built by the Deutsche Werft yard at Finkenwerder, Hamburg with yard number 336. Commissioned in June^[2][1] 1942, she was commanded by Kapitänleutnant Klaus Bargsten.

The U-boat was assigned to the 4th U-boat Flotilla for training and the 2nd flotilla for operations.

U-521 was sunk on 2 June 1943 by the submarine chaser USS Gilmer. The only survivor was Bargsten himself. This was the second boat under Bargsten's command, and the first that suffered heavy losses. The wreck of the submarine has never been found.