English
| U-57 | Type IIC |
| Feldpost Number | M 21 938 |
| Construction Yard | Deutsche Werke AG, Kiel-Gaarden |
| Yard Number | 256 |
| Ordered | 17th Jun 1937 |
| Keel laid | 14th Sep 1937 |
| Launched | 3rd Sep 1938 |
| Commissioned | 29th Dec 1938 |
| Baubelehrung | Lehrwerkstatt, Kiel / Marinelehrwerkstatt, Kiel |
| Training, Flotillas and Duties | |
| 12.38 – 12.39 | U-Flottille Emsmann, Kiel Frontboot (operational) |
| 01.40 – 09.40 | 1.U-Flottille, Kiel Frontboot (operational) |
| 01.41 – 06.44 | 22.U-Flottille, Gotenhafen Schulboot (training boat) |
| 07.44 – 04.45 | 19.U-Flottille, Pillau & Kiel Schulboot (training boat) |
| Commanders | |
| 12.38 – 06.40 | OL Claus Korth see also: U-93 |
| 05.40 – 10.40 | OL Erich Topp see also: U-552 U-2513 |
| 01.41 – 05.43 | Wilhelm Eisele see also: U-78 U-1103 |
| 05.43 – 07.44 | LT Walter Zenker see also: U-393 U-3535 |
| 08.44 – 05.45 | LT Peter Kühl |
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