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History
Nazi Germany
Name	U-722
Ordered	25 August 1941
Builder	H. C. Stülcken Sohn, Hamburg
Yard number	788
Laid down	21 December 1942
Launched	21 September 1943
Commissioned	15 December 1943
Fate	Sunk on 27 March 1945 in the North Atlantic in position 57°09′N 06°55′W / 57.150°N 6.917°W, by British frigates HMS Fitzroy, HMS Redmill and HMS Byron.
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;
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	5 × 53.3 cm (21 in) torpedo tubes (4 bow, 1 stern); 14 × torpedoes; 1 × 8.8 cm (3.46 in) deck gun (220 rounds); 2 × twin 2 cm (0.79 in) C/30 anti-aircraft guns;
Service record
Part of:	31st U-boat Flotilla; 15 December 1943 – 31 July 1944; 1st U-boat Flotilla; 1 August – 30 September 1944; 11th U-boat Flotilla; 1 October 1944 – 27 March 1945;
Identification codes:	M 54 762
Commanders:	Oblt.z.S. Hans-Heinrich Reimers; 15 December 1943 – 27 March 1945;
Operations:	3 patrols:; 1st patrol:; 16 October – 20 November 1944; 2nd patrol:; 7 – 29 December 1944; 3rd patrol:; 21 February – 27 March 1945;
Victories:	1 merchant ship sunk ; (2,190 GRT)

German submarine U-722 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 21 December 1942 by H. C. Stülcken Sohn, Hamburg as yard number 788, launched on 21 September 1943 and commissioned on 15 December 1943 under Leutnant zur See Hans-Heinrich Reimers.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-722 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.^[2] 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 AEG GU 460/8–27 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).^[2]

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).^[2] 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-722 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 two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.^[2]

Service history

The boat's career began with training at 31st U-boat Flotilla on 15 December 1943, followed by active service on 1 August 1944 as part of the 1st Flotilla. When the situation deteriorated for the Germans in France, following the invasion, she transferred to 11th Flotilla in Norway for the remainder of her service.

In three patrols she sank one merchant ship, for a total of 2,190 gross register tons (GRT).

Wolfpacks

U-722 took part in no wolfpacks.

Fate

U-722 was sunk on 27 March 1945 in the North Atlantic near the Hebrides, Scotland in position 57°09′N 06°55′W / 57.150°N 6.917°W / 57.150; -6.917, by depth charges from British frigates HMS Fitzroy, HMS Redmill and HMS Byron. All hands were lost.

Summary of raiding history

Date	Ship Name	Nationality	Tonnage (GRT)	Fate^[3]
16 March 1945	Inger Toft	United Kingdom	2,190	Sunk

References

^ Helgason, Guðmundur. "The Type VIIC boat U-722". German U-boats of WWII - uboat.net. Retrieved 15 September 2014.
^ ^a ^b ^c ^d Gröner 1991, pp. 43–46.
^ Helgason, Guðmundur. "Ships hit by U-722". German U-boats of WWII - uboat.net. Retrieved 15 September 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.
Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN 1-85780-072-9.

External links

Helgason, Guðmundur. "The Type VIIC boat U-722". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.

[uboatnet-1] Helgason, Guðmundur. "The Type VIIC boat U-722". German U-boats of WWII - uboat.net. Retrieved 15 September 2014.

[FOOTNOTEGröner199143–46-2] Gröner 1991, pp. 43–46.

[3] Helgason, Guðmundur. "Ships hit by U-722". German U-boats of WWII - uboat.net. Retrieved 15 September 2014.

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