U-664

Type

VIIC

Ordered

15 Aug 1940

Laid down

11 Jul 1941

Howaldtswerke Hamburg AG, Hamburg (werk 813)

Launched

28 Apr 1942

Commissioned

17 Jun 1942

Oblt. Adolf Graef

Commanders

17 Jun 1942

9 Aug 1943

Oblt. Adolf Graef

Career
5 patrols

17 Jun 1942	-	31 Oct 1942	8. Flottille (training)
1 Nov 1942	-	9 Aug 1943	9. Flottille (active service)

Successes

3 ships sunk, total tonnage 19,325 GRT

Fate

Sunk on 9 August 1943 in the North Atlantic west of the Azores, in position 40.12N, 37.29W, by depth charges from two Avenger and one Wildcat aircraft (VC-1 USN) of the US escort carrier USS Card. 7 dead and 44 survivors.

Loss position

See the 3 ships hit by U-664 - View the 5 war patrols

Wolfpack operations

U-664 operated with the following Wolfpacks during its career:
   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)

Attacks on this boat and other events

1 Nov 1942
Severe damage from depth charges dropped by an American Catalina flying boat (Sqdn VP 84 in Iceland, pilot R. C. Child) forced U-664 to return to France. (Sources: Blair, vol 2, page 43.)

8 Aug 1943
The boat took the escort carrier USS Card by surprise under cover of darkness and got three torpedoes off before the Card responded and forced her to dive. Subsequent depth charging caused no damage. (Sources: Blair, vol 2, page 385.)

2 recorded attacks on this boat.

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-664 did not suffer any casualties (we know of) until the time of her loss.