Shipyards
Flender Werke AG, Lübeck
42 commissioned U-boats
| Type | Boats | Werk | Built during | |
| IIB | U-120 - U-121 | 2 boats | 268 - 269 | 1937 - 1940 |
| VIIB | U-83 | 291 | 1938 - 1941 | |
| VIIB | U-84 - U-87 | 4 boats | 280 - 283 | 1938 - 1941 |
| VIIC | U-88 - U-92 | 5 boats | 292 - 296 | 1939 - 1942 |
| VIIC | U-301 - U-316 | 16 boats | 301 - 316 | 1940 - 1943 |
| VIIC | U-903 - U-904 | 2 boats | 329 - 330 | 1942 - 1943 |
| VIIC/41 | U-317 - U-328 | 12 boats | 317 - 328 | 1942 - 1944 |
The first U-boat launched by Flender Werke AG in Lübeck was the U-120 on 16 Mar 1940, but the last U-boat launched was the U-328 on 24 Jun 1944. 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-329, U-330
U-boat ordered but not laid down by this yard
| Type | Boats | Werk | Ordered | Notes | |
| VIIC/41 | U-1331 - U-1338 | 8 boats | 351 - 358 | 1942 | |
| VIIC/42 | U-1339 - U-1350 | 12 boats | 359 - 370 | 1943 |


