German submarine U-664

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Career (Nazi Germany)
Name: U-664
Ordered: 15 August 1940
Builder: Howaldtswerke, Hamburg
Yard number: 813
Laid down: 11 July 1941
Launched: 28 April 1942
Commissioned: 17 June 1942
Fate: Sunk 9 August 1943 in the North Atlantic in position 40°12′N 37°29′W / 40.200°N 37.483°W / 40.200; -37.483Coordinates: 40°12′N 37°29′W / 40.200°N 37.483°W / 40.200; -37.483, by depth charges from USN Grumman Avenger aircraft.
General characteristics
Displacement: 769 tonnes (757 long tons) surfaced
871 t (857 long tons) submerged
Length: 67.1 m (220 ft 2 in) o/a
50.5 m (165 ft 8 in) pressure hull
Beam: 6.2 m (20 ft 4 in) o/a
4.7 m (15 ft 5 in) pressure hull
Draft: 4.74 m (15 ft 7 in)
Propulsion: 2 × supercharged Germaniawerft 6-cylinder 4-stroke F46 diesel engines, totalling 2,800–3,200 bhp (2,100–2,400 kW). Max rpm: 470-490
2 × SSW GU 343/38-8 electric motors, totalling 750 shp (560 kW) and max rpm: 296
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 kn (19 km/h; 12 mph) surfaced
80 nmi (150 km; 92 mi) at 4 kn (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 ratings
Armament:
Service record[1]
Part of: 8th U-boat Flotilla
(17 June 1942 - 31 October 1942) - Training
9th U-boat Flotilla
(1 November 1942 - 9 August 1943)
Identification codes: M 05 024
Commanders: Oblt.z.S. Adolf Graef
(17 June 1942 - 9 August 1943)
Operations: 1st patrol:
20 October 1942 - 10 November 1942
2nd patrol:
5 December 1942 - 13 January 1943
3rd patrol:
14 February 1943 - 28 March 1943
4th patrol:
29 April 1943 - 9 June 1943
5th patrol:
21 July 1942 - 9 August 1943
Victories: 3 merchant ships sunk (19,325 GRT)

German submarine U-664 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 11 July 1941 by Howaldtswerke, Hamburg as yard number 813, launched on 28 April 1942 and commissioned on 17 June 1942 under Oberleutnant zur See Adolf Graef.

Service History[edit]

The boat's career began with training at 8th U-boat Flotilla on 17 June 1942, followed by active service on 1 November 1942 as part of the 9th Flotilla for the remainder of her service.

In 5 patrols she sank 3 merchant ships, for a total of 19,325 gross register tons (GRT).

First Patrol[edit]

On her first day of active service she was attacked by a US Catalina. The depth charge attack was so effective that she had to return to base in France.

Convoy ONS 167[edit]

Outward bound from Biscay on her second patrol, U-664 made a chance sighting of the slow convoy and radioed its position to base. Karl Dönitz ordered Graef to shadow the convoy while other boats were rounded up to form Wolfpack Sturmbock. However the boats were well scattered and failed to make contact with the convoy, so on the night of 21 February 1943, Graef became impatient with waiting and decided to attack alone.

With one spread of torpedoes, Graef sank the 4,659 GRT American steamer Rosario and the 8,807 GRT Panamanian tanker H H Rogers.

Wolf packs[edit]

U-664 took part in 8 wolf packs, namely

  • Raufbold (11 Dec 1942 - 22 Dec 1942)
  • Spitz (22 Dec 1942 - 31 Dec 1942)
  • Sturmbock (21 Feb 1943 - 26 Feb 1943)
  • Wildfang (26 Feb 1943 - 5 Mar 1943)
  • Raubgraf (7 Mar 1943 - 20 Mar 1943)
  • Without name (5 May 1943 - 10 May 1943)
  • Lech (10 May 1943 - 15 May 1943)
  • Donau 2 (15 May 1943 - 26 May 1943)

Fate[edit]

On 8 August 1943 U-664 fired three torpedoes at the escort carrier USS Card in a surprise attack, before USS Card was able to respond and forced her to dive. The following day, on 9 August 1943, USS Card got her revenge. U-664 was sunk in the North Atlantic in position 40°12′N 37°29′W / 40.200°N 37.483°W / 40.200; -37.483, by depth charges from USN Grumman Avenger aircraft launched from the carrier. Seven crew members were killed or drowned; 44 others were rescued by USS Borie after seven hours in the water.

Summary of Raiding Career[edit]

Date Name Nationality Tonnage
(GRT)
Fate[2]
16 December 1942 Emile Francqui  Belgium 8,859 Sunk
21 February 1943 H H Rogers  Panama 8,807 Sunk
21 February 1943 Rosario  United States 4,659 Sunk

References[edit]

Notes
  1. ^ "The Type VIIC boat U-664 - German U-boats of WWII - uboat.net". www.uboat.net. Retrieved 12 July 2014. 
  2. ^ "U-664 successes". UBoat.net. Retrieved 12 July 2014. 
Bibliography
  • Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945. Der U-Boot-Krieg (in German) IV (Hamburg, Berlin, Bonn: Mittler). ISBN 3-8132-0514-2. * Edwards, Bernard (1996). Dönitz and the Wolf Packs - The U-boats at War. p. 156. ISBN 0-304-35203-9. 
  • Sharpe, Peter (1998). U-Boat Fact File. Great Britain: Midland Publishing. ISBN 1-85780-072-9. 

External links[edit]