List of all U-boats




Ordered6 Nov 1943
Laid down25 Apr 1944 Blohm & Voss, Hamburg (werk 2502)
Launched15 Jun 1944
Commissioned19 Jul 1944Kptlt. Gert Mannesmann
19 Jul 1944 - 8 Apr 1945  Kptlt. Gert Mannesmann (German Cross in Gold)
9 Apr 1945 - 12 Apr 1945  Kptlt. Hans Hornkohl
12 Apr 1945 - 9 May 1945  Kptlt. Rudolf Heinz Franke (Knights Cross)
No patrols
19 Jul 1944-1 Mar 1945  31. Flottille (training)
1 Mar 1945-8 May 1945  11. Flottille (active service)
SuccessesNo ships sunk or damaged

Surrendered on 9 May 1945 at Horten, Norway (Waller & Niestlé, 2010).

Transferred to Oslo, Norway 18 May
Departed Oslo 3 June
Arrived Scapa Flow, Scotland 6 June
Departed Scapa Flow 8 June
Arrived Lisahally, Northern Ireland 9 June

Selected for RN testing, but broke down en route to SW Scotland for trials. Arrived Birkenhead 22 July. Starboard main and auxiliary motors overheated and damaged by fire 23 July prior to entering dry dock. When docked, repairs were estimated at 4 to 6 weeks and required cutting out a section of the hull. Trials were cancelled, and U-252 returned to Lisahally on 2 August 1945 for storage pending disposal.

On 1 Jan 1946 removed for Operation Deadlight.

Operation Deadlight (post-war Allied operation, info)
On 1 Jan, 1946 she was taken to Moville, some 15 miles north of Lisahally. From there she was sunk on 2 Jan, 1946 at 1030 hours in position 56.06N, 09.00W.

Final location

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

Attacks on this boat and other events

8 Apr 1945
U-2502s commander, Kptlt. d. Res Gert Mannesmann, died in an air raid on Hamburg.

1 recorded attack on this boat.

Men lost from the boat

8 Apr 1945
U-2502s commander, Kptlt. d. Res Gert Mannesmann, died in an air raid on Hamburg.

  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.

M inside Shield

Media links

The Grey Wolves of Eriboll

David M. Hird

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

Wynn, Kenneth

The Royal Navy and German Naval Disarmament, 1942-1947

Madsen, Chris

German U-Boat Losses During World War II

Niestle, Axel