Patrols by U-997
See the profile page for U-997
| Commander | Departure | Arrival | Days | |||||
| 1. | Oblt. Hans Lehmann | 25 Apr, 1944 | Kiel | 29 Apr, 1944 | Egersund | 5 days | ||
| 2. | Oblt. Hans Lehmann | 16 May, 1944 | Egersund | 16 May, 1944 | Bergen | 1 days | ||
| 3. | Oblt. Hans Lehmann | 18 May, 1944 | Bergen | 22 May, 1944 | Bogenbucht | 5 days | ||
| 4. | Oblt. Hans Lehmann | 25 May, 1944 | Bogenbucht | 22 Jun, 1944 | Hammerfest | 29 days | P | View |
| 5. | Oblt. Hans Lehmann | 18 Jul, 1944 | Hammerfest | 20 Jul, 1944 | Hammerfest | 3 days | ||
| 6. | Oblt. Hans Lehmann | 6 Aug, 1944 | Hammerfest | 2 Sep, 1944 | Narvik | 28 days | P | View |
| 7. | Oblt. Hans Lehmann | 13 Sep, 1944 | Narvik | 2 Oct, 1944 | Bogenbucht | 20 days | P | View |
| 8. | Oblt. Hans Lehmann | 8 Oct, 1944 | Bogenbucht | 10 Oct, 1944 | Hammerfest | 3 days | ||
| 9. | Oblt. Hans Lehmann | 14 Oct, 1944 | Hammerfest | 9 Nov, 1944 | Narvik | 27 days | P | View |
| 10. | Oblt. Hans Lehmann | 21 Nov, 1944 | Narvik | 26 Dec, 1944 | Narvik | 36 days | P | View |
| 11. | Oblt. Hans Lehmann | 27 Dec, 1944 | Narvik | 29 Dec, 1944 | Trondheim | 3 days | ||
| 12. | Oblt. Hans Lehmann | 22 Feb, 1945 | Trondheim | 26 Feb, 1945 | Kilbotn | 5 days | ||
| 13. | Oblt. Hans Lehmann | 7 Mar, 1945 | Kilbotn | 8 Mar, 1945 | Kilbotn | 2 days | ||
| 14. | Oblt. Hans Lehmann | 12 Mar, 1945 | Kilbotn | 24 Mar, 1945 | Narvik | 13 days | P | View |
| 15. | Oblt. Hans Lehmann | 17 Apr, 1945 | Narvik | 30 Apr, 1945 | Narvik | 14 days | P | View |
7 War patrols (P) located. | ||||||||
