List of all U-boats




Ordered14 Oct 1941
Laid down29 Apr 1943 Deutsche Werft AG, Hamburg (werk 396)
Launched23 Dec 1943
Commissioned22 Mar 1944 Korvkpt. Hans-Joachim Kuhn
22 Mar 1944 - 14 Apr 1945  KrvKpt. Hans-Joachim Kuhn
15 Apr 1945 - 5 May 1945  Oblt. Heinrich Niemeyer (German Cross in Gold)
1 patrol
22 Mar 1944-31 Oct 1944  31. Flottille (training)
1 Nov 1944-5 May 1945  33. Flottille (active service)
SuccessesNo ships sunk or damaged

Surrendered on 5 May 1945 at Baring Bay, near Fredericia, Denmark (Waller & Niestlé, 2010).

Transferred from Wilhelmshaven to Loch Ryan, Scotland on 24 June 1945 for Operation Deadlight.

Operation Deadlight (post-war Allied operation, info)
Sunk on 29 Dec, 1945 in position 55.51N, 08.54W by naval gunfire from the destroyer HMS Onslaught.

Final location

Blue marker shows final fate during Operation Deadlight. Orange marker shows German surrender.

View the 1 war patrol

Read more about the Schnorchel and see list of fitted boats.

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-1233 did not suffer any casualties (we know of) until the time of her loss.

U-boat Emblems

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

U-boat, Cane, U

Media links

The Grey Wolves of Eriboll

David M. Hird

The Royal Navy and German Naval Disarmament, 1942-1947

Madsen, Chris
($ 8.29)
(£ 41.99)
(EUR 24.84)

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

Wynn, Kenneth

Hitler's U-boat War, Vol II

Blair, Clay
($ 20.49)

German U-Boat Losses During World War II

Niestle, Axel
($ 50.00)