Name U-531 Yard number 346 Commissioned 28 October 1942 Launched 12 August 1942 Draft 4.67 m Builder Deutsche Werft | Ordered 15 August 1940 Laid down 22 December 1941 Construction started 22 December 1941 Length 77 m Beam 6.86 m | |
Fate Sunk 6 May 1943 in the North Atlantic. | ||
German submarine U-531 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during World War II. She was laid down at Deutsche Werft in Hamburg as yard number 346 on 22 December 1941, launched on 12 August 1942 and commissioned on 28 October with Oberleutnant zur See Herbert Neckel in command.
Contents
Her service began with training as part of the 4th U-boat Flotilla; she then joined the 2nd flotilla for operations on 1 April 1943.
Design
German Type IXC/40 submarines were slightly larger than the original Type IXCs. U-531 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-531 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) as well as a 2 cm (0.79 in) anti-aircraft gun. The boat had a complement of forty-eight.
Service history
U-531's operational career commenced with her departure from Kiel on 13 April 1943. Heading for the Atlantic, her route took her between Iceland and the Faeroe Islands. On 22 April, in the afternoon, she was attacked southeast of Iceland by a Catalina flying boat of 120 Squadron RAF. That evening, she was attacked again, this time by a British Flying Fortress of 206 Squadron.
On 6 May, the boat was attacked northeast of Newfoundland by depth charges from HMS Vidette and sunk with all hands (54).
Previously recorded fate
The destruction of U-531 had been attributed to the destroyer HMS Oribi and the Flower-class corvette HMS Snowflake.
Wolfpacks
U-531 took part in three wolfpacks, namely.