During the morning hours (German time) of May 4th 1945 the following signal was sent to all U-boat commanders:
ALL U-BOATS. ATTENTION ALL U-BOATS.
CEASE-FIRE AT ONCE. STOP ALL HOSTILE ACTION AGAINST ALLIED SHIPPING.
DÖNITZ.
The following U-boats were at sea when the order above came from Dönitz. Here below are they all listed, when they left port and to which port they came to surrender.
[DL] means that this U-boat ended her career during Operation Deadlight.
| Boat | Sailed | Patrol end | ||
| U-190 | 19 Feb, 1945 | 14 May, 1945 | St.Johns, Canada | |
| U-218 | 22 Mar, 1945 | 8 May, 1945 | Bergen, Norway | [DL] |
| U-234 | 16 Apr, 1945 | 19 May, 1945 | Portsmouth, USA | |
| U-244 | 15 Apr, 1945 | 14 May, 1945 | Loch Foyle, UK | [DL] |
| U-245 | 9 Apr, 1945 | 9 May, 1945 | Bergen, Norway | [DL] |
| U-249 | 3 Apr, 1945 | 9 May, 1945 | Portland, UK | [DL] |
| U-255 | 5 May, 1945 | 7 May, 1945 | St.Nazaire, France | [DL] |
| U-255 | 8 May, 1945 | 19 May, 1945 | Loch Alsh, UK | [DL] |
| U-278 | 10 Apr, 1945 | 9 May, 1945 | Narvik, Norway | [DL] |
| U-287 | 29 Apr, 1945 | 16 May, 1945 | Sunk | |
| U-293 | 1 Apr, 1945 | 11 May, 1945 | Loch Eriboll, UK | [DL] |
| U-295 | 15 Apr, 1945 | 7 May, 1945 | Narvik, Norway | [DL] |
| U-312 | 16 Apr, 1945 | 8 May, 1945 | Narvik, Norway | [DL] |
| U-313 | 17 Apr, 1945 | 8 May, 1945 | Narvik, Norway | [DL] |
| U-318 | 1 Apr, 1945 | 10 May, 1945 | Narvik, Norway | [DL] |
| U-320 | 27 Apr, 1945 | 8 May, 1945 | Sunk | |
| U-363 | 18 Apr, 1945 | 8 May, 1945 | Narvik, Norway | [DL] |
| U-481 | 7 Apr, 1945 | 4 May, 1945 | Narvik, Norway | [DL] |
| U-485 | 29 Apr, 1945 | 14 May, 1945 | Gibraltar | [DL] |
| U-516 | 5 Apr, 1945 | 14 May, 1945 | Loch Eriboll, UK | [DL] |
| U-530 | 3 Mar, 1945 | 10 Jul, 1945 | Mar del Plata, Argentina | |
| U-532 | 13 Jan, 1945 | 10 May, 1945 | Liverpool, UK | [DL] |
| U-534 | 5 May, 1945 | 5 May, 1945 | Sunk | |
| U-541 | 7 Apr, 1945 | 12 May, 1945 | Gibraltar | [DL] |
| U-739 | 1 Apr, 1945 | 13 May, 1945 | Emden, Germany | [DL] |
| U-764 | 26 Apr, 1945 | 14 May, 1945 | Loch Eriboll, UK | [DL] |
| U-776 | 22 Mar, 1945 | 16 May, 1945 | Portland, UK | [DL] |
| U-802 | 28 Apr, 1945 | 11 May, 1945 | Loch Eriboll, UK | [DL] |
| U-805 | 17 Mar, 1945 | 16 May, 1945 | Boston, USA | |
| U-825 | 1 Apr, 1945 | 10 May, 1945 | Portland, UK | [DL] |
| U-826 | 9 Mar, 1945 | 11 May, 1945 | Loch Eriboll, UK | [DL] |
| U-853 | 23 Feb, 1945 | 6 May, 1945 | Sunk | |
| U-858 | 11 Mar, 1945 | 14 May, 1945 | Cape May, New Jersey, USA | |
| U-873 | 30 Mar, 1945 | 17 May, 1945 | Portsmouth, USA | |
| U-881 | 7 Apr, 1945 | 6 May, 1945 | Sunk | |
| U-889 | 5 Apr, 1945 | 13 May, 1945 | Halifax, Canada | |
| U-901 | 14 Apr, 1945 | 15 May, 1945 | Stavanger, Norway | [DL] |
| U-907 | 29 Apr, 1945 | 5 May, 1945 | Bergen, Norway | [DL] |
| U-956 | 2 Apr, 1945 | 13 May, 1945 | Loch Eriboll, UK | [DL] |
| U-963 | 23 Apr, 1945 | 20 May, 1945 | Scuttled | |
| U-968 | 21 Apr, 1945 | 6 May, 1945 | Harstad, Norway | [DL] |
| U-977 | 2 May, 1945 | 17 Aug, 1945 | Mar del Plata, Argentina | |
| U-979 | 29 Mar, 1945 | 24 May, 1945 | Scuttled | |
| U-992 | 1 May, 1945 | 9 May, 1945 | Narvik, Norway | [DL] |
| U-1005 | 3 May, 1945 | 14 May, 1945 | Bergen, Norway | [DL] |
| U-1009 | 29 Mar, 1945 | 10 May, 1945 | Loch Eriboll, UK | [DL] |
| U-1010 | 15 Apr, 1945 | 14 May, 1945 | Loch Eriboll, UK | [DL] |
| U-1023 | 25 Mar, 1945 | 10 May, 1945 | Weymouth, UK | [DL] |
| U-1058 | 28 Apr, 1945 | 10 May, 1945 | Loch Eriboll, UK | |
| U-1105 | 12 Apr, 1945 | 10 May, 1945 | Loch Eriboll, UK | |
| U-1109 | 17 Apr, 1945 | 12 May, 1945 | Loch Eriboll, UK | [DL] |
| U-1163 | 15 Apr, 1945 | 9 May, 1945 | Marviken, Norway | [DL] |
| U-1165 | 21 Apr, 1945 | 5 May, 1945 | Narvik, Norway | [DL] |
| U-1228 | 14 Apr, 1945 | 13 May, 1945 | Portsmouth, USA | |
| U-1231 | 27 Apr, 1945 | 14 May, 1945 | Loch Foyle, UK | |
| U-1272 | 29 Apr, 1945 | 10 May, 1945 | Bergen, Norway | [DL] |
| U-1277 | 21 Apr, 1945 | 3 Jun, 1945 | Scuttled | |
| U-1305 | 4 Apr, 1945 | 10 May, 1945 | Loch Eriboll, UK | |
| U-2324 | 2 Apr, 1945 | 8 May, 1945 | Stavanger, Norway | [DL] |
| U-2326 | 4 May, 1945 | 14 May, 1945 | Dundee, Scotland | |
| U-2336 | 1 May, 1945 | 14 May, 1945 | Kiel, Germany | [DL] |
| U-2511 | 3 May, 1945 | 6 May, 1945 | Bergen, Norway | [DL] |
62 U-boats were at sea on May 4, 1945 when the End-Hostilities order was given.
54 surrendered in Allied or neutral ports (40 of them were scuttled in Operation Deadlight).
U-boats lost at sea after May 4, 1945
Boat Date Crew Dead Survivors U-711 4. May 47 32 15 U-2338 4. May 17 12 5 U-2503 4. May 57 13 44 U-2521 4. May 57 44 13 U-2367 5. May 17 0 17 U-534 5. May 52 3 49 U-579 5. May 48* 24 24* U-3523 5. May 58 58 0 U-1008 6. May 44 0 44 U-881 6. May 53 53 0 U-853 6. May 55 55 0 U-320 8. May 47 0 47 |
The Numbers
The allied captured 154 boats at the end of the war, 39 out of them were returned from sea and 115 were in their bases. The Germans scuttled 219 U-boats near the end of the war to prevent them from falling into allied hands.The Third Reich thus had 376 U-boats available at the end of the war.


