List of all U-boats




Ordered15 Aug 1940
Laid down23 Sep 1941 Blohm & Voss, Hamburg (werk 610)
Launched10 Jun 1942
Commissioned6 Aug 1942Oblt. Hans-Günther Brosin
6 Aug 1942 - 2 Feb 1943  Oblt. Hans-Günther Brosin
28 Jan 1943 - 30 Aug 1943  Oblt. Eberhard Dahlhaus
3 patrols
6 Aug 1942-31 Jan 1943  5. Flottille (training)
1 Feb 1943-30 Aug 1943  9. Flottille (active service)
Successes1 ship sunk, total tonnage 7,176 GRT

Sunk on 30 August 1943 in the North Atlantic east of the Azores, in position 40.13N, 19.24W, by depth charges from the British sloop HMS Stork and the British corvette HMS Stonecrop. 47 dead (all hands lost).

Loss position

See the 1 ships hit by U-634 - View the 3 war patrols

Wolfpack operations

U-634 operated with the following Wolfpacks during its career:
   Westmark (6 Mar 1943 - 11 Mar 1943)
   Amsel (22 Apr 1943 - 3 May 1943)
   Amsel 2 (3 May 1943 - 6 May 1943)
   Elbe (7 May 1943 - 10 May 1943)
   Elbe 1 (10 May 1943 - 14 May 1943)

Attacks on this boat and other events

18 Apr 1943
09.10 hrs, Atlantic NW of Finisterre, outbound: the boat was attacked by Australian Sunderland Mk.III DV969 (10 Sqdn RAAF/E, pilot F/O E.H. Farmer). Two 250lb GP bombs were dropped on the first run, falling 30m (98ft) astern. U-634 fought off a second attack (six depth charges) with AA fire before diving with minor damage to the conning tower from strafing. The Sunderland was hit in the nose and starboard wing and two of the 12 crew were wounded by shell splinters. (Sources: Franks/Zimmerman)

13 Jun 1943
Aircraft attack, aircraft shot down:British Sunderland flying boat (228 Sqdn RAF/U)

14 Jun 1943
Outbound from Brest, in the Bay of Biscay: a Wellington bomber made a Leigh Light attack and forced the boat to dive. Date is approximate. (Sources: Blair, vol 2, page 365)

3 recorded attacks on this boat.

Men lost from the boat

10 Mar 1943
A man was lost overboard. [Bootsmaat Ernst Adam]

  Related: For more info on such losses see - Men lost from U-boats -

U-boat Emblems

We have 1 emblem entry for this boat. See the emblem page for this boat or view emblems individually below.

Crest of Schwäbisch Hall

Media links

Hitler's U-boat War, Vol II

Blair, Clay

German U-Boat Losses During World War II

Niestle, Axel

U-Boat Operations of the Second World War - Vol 2

Wynn, Kenneth

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