| U-7 | Type IIB |
| Feldpost Number | M 16 723 |
| Construction Yard | F.Krupp Germaniawerft AG, Kiel-Gaarden |
| Yard Number | 541 |
| Ordered | 20th Jul 1934 |
| Keel laid | 11th Mar 1935 |
| Launched | 29th Jun 1935 |
| Commissioned | 18th Jul 1935 |
| Baubelehrung | Marinelehr-und Reparaturwerkstatt, Kiel |
| Training, Flotillas and Duties |
| 09.35 - 06.40 | U-Schule Flottille, Neustadt Schulboot (training boat) Frontboot (operational)
|
| 07.40 - 02.44 | 21.U-Flottille, Pillau Schulboot (training boat)
|
| Commanders |
| 18.07.35 - 03.10.37 | KL Kurt Freiwald see also: U-33 U-21 U-181 |
| 10.02.38 - 18.12.38 | OL Otto Salman see also: U-52 |
| 18.12.38 - 13.10.39 | OL Werner Heidel see also: U-6 U-55 |
| 31.05.39 - 02.07.39 | OL Otto Salman see also: U-52 |
| 02.08.39 - 01.10.39 | OL Otto Salman see also: U-52 |
| 25.10.39 - 13.11.39 | OL Otto Salman see also: U-52 |
| 14.11.39 - 10.40 | OL ~ KL Karl Schrott see also: U-551 |
| 10.40 - 01.41 | OL Günther Reeder see also: U-214 |
| 01.41 - 02.41 | OL Ernst-Ulrich Brüller see also: U-23 U-407 |
| 02.41 - 29.03.41 | OL Günther Reeder |
| 30.03.41 - 16.06.41 | OL Hans-Günther Kuhlmann see also: U-580 U-166 |
| 17.06.41 - 15.01.42 | OL Heinrich Schmid see also: U-663 |
| 16.01.42 - 07.10.42 | OL Johannes Siegfried Koitschka see also: U-616 |
| 09.42 - 12.42 | LT Otto Hübschen see also: U-60 U-121 U-145 U-2501 U-2542 |
| 08.10.42 - 01.44 | OL Hans Schrenk see also: U-901 |
| 01.44 - 18.02.44 | OL Günther Loeschcke |