Shipyards
Blohm & Voss, Hamburg
224 commissioned U-boats
| Type | Boats | Werk | Built during | |
| VIIC | U-551 - U-650 | 100 boats | 527 - 626 | 1939 - 1942 |
| VIIC | U-951 - U-994 | 44 boats | 151 - 194 | 1941 - 1943 |
| VIIC/41 | U-995 | 195 | 1941 - 1943 | |
| VIIC/41 | U-997 - U-1010 | 14 boats | 197 - 210 | 1941 - 1944 |
| VIIC/41 | U-1013 - U-1025 | 13 boats | 213 - 225 | 1942 - 1945 |
| XVIIA | U-792 - U-793 | 2 boats | 455 - 456 | 1942 - 1944 |
| XVIIB | U-1405 - U-1407 | 3 boats | 255 - 257 | 1943 - 1945 |
| XXI | U-2501 - U-2531 | 31 boats | 2501 - 2531 | 1943 - 1945 |
| XXI | U-2533 - U-2536 | 4 boats | 2533 - 2536 | 1943 - 1945 |
| XXI | U-2538 - U-2546 | 9 boats | 2538 - 2546 | 1943 - 1945 |
| XXI | U-2548 | 2548 | 1943 - 1945 | |
| XXI | U-2551 - U-2552 | 2 boats | 2551 - 2552 | 1943 - 1945 |
The first U-boat launched by Blohm & Voss in Hamburg was the U-551 on 14 Sep 1940, but the last U-boat launched was the U-2551 on 31 Mar 1945. This refers to U-boats that were actually commissioned into the Kriegsmarine.
U-boats that had been laid down
The following boats were laid down but not finished by the yard:
U-996, U-1011, U-1012, U-1026, U-1027, U-1028, U-1029
, U-1030, U-1031, U-1032, U-1408, U-1409, U-1410, U-2532
, U-2537, U-2547, U-2549, U-2550, U-2553, U-2554, U-2555
, U-2556, U-2557, U-2558, U-2559, U-2560, U-2561, U-2562
, U-2563, U-2564
U-boat ordered but not laid down by this yard
| Type | Boats | Werk | Ordered | Notes | |
| VIIC/41 | U-996 | 196 | 1941 | Sunk in dock in August 1944. | |
| VIIC/41 | U-1011 - U-1012 | 2 boats | 211 - 212 | 1942 | Damaged during RAF air raid on 25 July 1943. Repair work cancelled on 22 July, 1944. |
| VIIC/41 | U-1026 - U-1050 | 25 boats | 226 - 250 | 1942 | Scuttled incomplete in May 1945. |
| VIIC/41 | U-1401 - U-1404 | 4 boats | 251 - 254 | 1943 | |
| VIIC/41 | U-1417 - U-1422 | 6 boats | 267 - 272 | 1943 | |
| VIIC/41 | U-1435 - U-1439 | 5 boats | 285 - 289 | 1943 | |
| VIIC/42 | U-1423 - U-1434 | 12 boats | 273 - 284 | 1943 | |
| VIIC/42 | U-1440 - U-1463 | 24 boats | 290 - 313 | 1943 | |
| XVIIB | U-1408 - U-1416 | 9 boats | 258 - 266 | 1943 | Damaged in an air raid on 30 March, 1945. Scuttled at yard before completion. |
| XXI | U-2532 | 2532 | 1943 | Sunk by bombs at the yard during an air raid on Hamburg on 31 Dec, 1944 and again in 17 Jan, 1945. | |
| XXI | U-2537 | 2537 | 1943 | Sunk by bombs at the yard during an RAF air raid on Hamburg on 31 Dec, 1944. | |
| XXI | U-2547 | 2547 | 1943 | Bombed while being assembled on 11 March, 1945. | |
| XXI | U-2549 - U-2550 | 2 boats | 2549 - 2550 | 1943 | Bombed while being assembled on 11 March, 1945. |
| XXI | U-2553 - U-2762 | 210 boats | 2553 - 2762 | 1943 | Not finished before the end of the war. Broken up on the stocks in 1945-1946. |
| XXVIW | U-4501 - U-4600 | 100 boats | 4501 - 4600 | 1944 | No keels laid, only prefabricated sections in development. |
Summary
Of those 403 contracts not finished by Blohm & Voss in Hamburg, 30 had been laid down and 9 of those had been launched before the war ended.

