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	Type VIIC submarine U-570 which looked almost identical to U-972.
History
Nazi Germany
Name	U-972
Ordered	5 June 1941
Builder	Blohm & Voss, Hamburg
Yard number	172
Laid down	15 June 1942
Launched	22 February 1943
Commissioned	8 April 1943
Fate	Missing since 15 December 1943 in the North Atlantic. No explanation for her loss.
General characteristics
Class and type	Type VIIC submarine
Displacement	864.7 t (851 long tons) submerged
Length	67.10 m (220 ft 2 in) o/a; 50.50 m (165 ft 8 in) pressure hull;
Beam	6.18 m (20 ft 3 in) o/a; 4.68 m (15 ft 4 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 × 4-stroke M6V 40/46 Germaniawerft; 2 x 62 batteries ; 2 x six-cylinder supercharged diesel engines ; 2 × electric motors;
Speed	17.6 knots (32.6 km/h; 20.3 mph) surfaced; 7.5 knots (13.9 km/h; 8.6 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	220 m (720 ft); Crush depth: 250–295 m (820–968 ft);
Complement	44–57 crew
Armament	5 × 53.3 cm (21 in) torpedo tubes (four bow, one stern); 14 × torpedoes ; 1 × 8.8 cm (3.46 in) deck gun (220 rounds); 1 x 3.7 cm (1.5 in) Flak M42 anti-aircraft gun;
Service record
Part of:	5th U-boat Flotilla; 8 April – 30 November 1943; 6th U-boat Flotilla; 1 – 15 December 1943;
Identification codes:	M 42 135
Commanders:	Oblt.z.S. Klaus-Dietrich König; 8 April – 15 December 1943;
Operations:	1 patrol:; 30 November – 15 December 1943;
Victories:	None

German submarine U-972 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.^[1]

Construction

U-972 was laid down on 15 June 1942 at the Blohm & Voss yard in Hamburg, Germany. She was launched on 22 February 1943 and commissioned on 8 April 1943 under the command of Oberleutnant zur See Klaus-Dietrich König. Her U-boat emblem was a skull with tophat.^[2]

When she was completed, the submarine was 67.10 metres (220 ft 2 in) long, with a beam of 6.18 metres (20 ft 3 in), a height of 9.60 metres (31 ft 6 in) and a draft of 4.74 metres (15 ft 7 in). She was assessed at 864.7 t (851 long tons) submerged. 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 and two BBC GG UB 720/8 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 submarine was capable of operating at depths of up to 230 metres (750 ft), had a maximum surface speed of 17.6 knots (32.6 km/h; 20.3 mph) and a maximum submerged speed of 7.5 knots (13.9 km/h; 8.6 mph). When submerged, the U-boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) and when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph).^[1]

The submarine 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) deck gun (220 rounds) and a 3.7 cm (1.5 in) Flak M42 anti-aircraft gun. The boat had a complement of 44 to 57 men.^[1]

Service history

U-972 was used as a Training ship in the 5th U-boat Flotilla from 8 April 1943 until 30 November 1943 where she had been trained and tested at the individual commands (UAK, TEK, AGRU-Front, etc.) and had been part of Ausbildungsflottillen (26th U-boat Flotilla, 27th U-boat Flotilla, etc.) for remaining works and equipment, before serving in the 6th U-boat Flotilla for active service on 1 December 1943.^[3]

Wolfpacks

U-972 took part in four wolfpacks, namely:

Coronel (15 – 17 December 1943)
Sylt (18 – 23 December 1943)
Rügen 1 (23 – 28 December 1943)
Rügen 2 (28 December 1943 – 1 January 1944)^[3]

Patrol and loss

During her active service, U-972 made one patrol. She left Kiel on 30 November 1943 with 49 crew members and made her way to her operational area in the North Atlantic. Her patrol lasted 16 days before U-972 sent her last radio message on 15 December 1943 from approx. position 60°30′N 20°00′W / 60.500°N 20.000°W / 60.500; -20.000 in the North Atlantic. The submarine was ordered to operate with several wolfpacks during the following weeks and was only reported missing on 1 February 1944 when it failed to arrive at Brest. The submarine was lost with all hands and her wreck has yet to be found.^[2]

There is much speculation surrounding the loss of the U-972, it is reported that she was sunk by one of her own circling T5 torpedoes. But now it is believed she was sunk by Allied warships. This was her first and only patrol during World War II. The real reason of her sinking is still unknown as her last resting place remains lost.^[2]

References

^ ^a ^b ^c "U-972 (+1944)". wrecksite.eu. 29 November 2009. Retrieved 7 April 2016.
^ ^a ^b ^c Helgason, Guðmundur (1995). "U-972". German U-boats of WWII - uboat.net. Retrieved 7 April 2016.
^ ^a ^b Hofmann, Markus (22 December 2013). "U-972". Deutsche U-Boote 1935-1945 - u-boot-archiv.de (in German). Retrieved 7 April 2016.

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.
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.