Neptun Werft AG, Rostock
10 commissioned U-boats
Type | Boats | | Werk | Built during |
| U-921 - U-928 | 8 boats | 508- 515 | 1941 |
| U-929 - U-930 | 2 boats | 516- 517 | 1942 |
The first U-boat launched by Neptun Werft AG in Rostock was the U-921 on 3 Apr 1943, but the last U-boat launched was the U-927 on 3 May 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-931, U-932
U-boat ordered but not laid down by this yard
Type | Boats | | Werk | Ordered | Notes |
| U-933 - U-936 | 4 boats | 524- 527 | 1942 | |
| U-937 - U-942 | 6 boats | 529- 534 | 1943 | |
Summary
Of those
12 contracts not finished by Neptun Werft AG in Rostock,
2 had been laid down before the war ended.