| U-149 | Type IID |
| Feldpost Number | M 16 105 |
| Construction Yard | Deutsche Werke AG, Kiel-Gaarden |
| Yard Number | 278 |
| Ordered | 25th Sep 1939 |
| Keel laid | 25th May 1940 |
| Launched | 19th Oct 1940 |
| Commissioned | 13th Nov 1940 |
| Baubelehrung | Baubelehrung U-Boote Ostsee, Kiel |
| Training, Flotillas and Duties |
| 11.40 - 12.40 | 1.U-Flottille, Kiel Ausbildungsboot (under training)
|
| 01.41 - 05.45 | 22.U-Flottille, Gotenhafen.Wilhelmshaven Schulboot (training boat)
|
| Commanders |
| 11.40 - 11.41 | OL Horst Höltring see also: U-1084 U-604 |
| 11.41 - 07.42 | KL Rolf Borchers see also: U-226 U-276 U-2515 |
| 08.42 - 05.44 | OL Adolf-Wilhelm Frhr von Hammerstein-Equord |
| 05.44 - 05.45 | OL Helmut Plohr |