German submarine U-651

German World War II submarine

History

Nazi Germany
Name	U-651
Ordered	9 October 1939
Builder	Howaldtswerke Hamburg AG
Yard number	800
Laid down	16 January 1940
Launched	21 December 1940
Commissioned	12 February 1941
Fate	Sunk on 29 June 1941 south of Iceland, 45 survivors.
General characteristics
Class and type	Type VIIC submarine
Displacement	769 tonnes (757 long tons) surfaced 871 t (857 long tons) submerged
Length	67.10 m (220 ft 2 in) o/a 50.50 m (165 ft 8 in) pressure hull
Beam	6.20 m (20 ft 4 in) o/a 4.70 m (15 ft 5 in) pressure hull
Height	9.60 m (31 ft 6 in)
Draught	4.74 m (15 ft 7 in)
Installed power	2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels) 750 PS (550 kW; 740 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	17.7 knots (32.8 km/h; 20.4 mph) surfaced 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range	8,500 nmi (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph) surfaced 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	230 m (750 ft) Crush depth: 250–295 m (820–968 ft)
Complement	4 officers, 40–56 enlisted
Armament	4 × 53.3 cm (21 in) torpedo tubes in the bow 14 × torpedoes or 26 TMA mines 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 1 x 2 cm (0.79 in) C/30 AA gun
Service record
Part of:	1st U-boat Flotilla 12 February – 29 June 1941
Identification codes:	M 35 647
Commanders:	Kptlt. Peter Lohmeyer 12 February – 29 June 1941
Operations:	1 patrol: 12 – 29 June 1941
Victories:	2 merchant ships sunk (11,639 GRT)

German submarine U-651 was a German Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was ordered just after the war started in 1939, laid down on 16 January 1940, launched on 21 December that year and commissioned the following 21 February. She was commanded by Kapitänleutnant Peter Lohmeyer.

Her career was a short one. She took part in only one patrol and sank two ships in convoy Convoy HX 133: the merchantmen Brockley Hill and Grayburn. On 29 June 1941, she was sunk by the escort for the same convoy but 45 of her crew were rescued by the Royal Navy and interrogated by the Admiralty.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-651 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.^[1] She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). 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 Siemens-Schuckert GU 343/38-8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).^[1]

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph).^[1] When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-651 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.^[1]

Ships credited for the sinking of U-651

Destroyers

HMS Malcolm
HMS Scimitar

Corvettes

HMS Arabis
HMS Violet

Minesweeper

HMS Speedwell

Summary of raiding history

Date	Ship Name	Nationality	Tonnage (GRT)	Fate^[2]
24 June 1941	Brockley Hill	United Kingdom	5,297	Sunk
29 June 1941	Grayburn	United Kingdom	6,342	Sunk

References

^ ^a ^b ^c ^d Gröner 1991, pp. 43–46.
^ Helgason, Guðmundur. "Ships hit by U-651". German U-boats of WWII - uboat.net. Retrieved 6 February 2014.

Bibliography

Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press. ISBN 1-55750-186-6.
Busch, Rainer; Röll, Hans-Joachim (1999). Der U-Boot-Krieg, 1939-1945: Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 [German U-boat losses from September 1939 to May 1945] (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2.
Gröner, Eric; Jung, Dieter; Maass, Martin (1991). German Warships 1815-1945: U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.

External links

Helgason, Guðmundur. "The Type VIIC boat U-651". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.
Hofmann, Markus. "U 651". Deutsche U-Boote 1935-1945 - u-boot-archiv.de (in German). Retrieved 29 December 2014.

59°52′N 18°36′W / 59.867°N 18.600°W / 59.867; -18.600

German Type VII submarines

Type VIIA