Patrols by U-403
See the profile page for U-403
| Commander | Departure | Arrival | Days | |||||
| 1. | Kptlt. Heinz-Ehlert Clausen | 23 Feb, 1942 | Kiel | 26 Feb, 1942 | Helgoland | 4 days | ||
| 2. | Kptlt. Heinz-Ehlert Clausen | 1 Mar, 1942 | Helgoland | 19 Mar, 1942 | Narvik | 19 days | P | View |
| 3. | Kptlt. Heinz-Ehlert Clausen | 23 Mar, 1942 | Narvik | 23 Mar, 1942 | Harstad | 1 days | ||
| 4. | Kptlt. Heinz-Ehlert Clausen | 4 Apr, 1942 | Harstad | 21 Apr, 1942 | Harstad | 18 days | P | View |
| 5. | Kptlt. Heinz-Ehlert Clausen | 10 May, 1942 | Harstad | 13 May, 1942 | Bergen | 4 days | ||
| 6. | Kptlt. Heinz-Ehlert Clausen | 17 Jul, 1942 | Bergen | 28 Jul, 1942 | Skjomenfjord | 12 days | P | View |
| 7. | Kptlt. Heinz-Ehlert Clausen | 2 Aug, 1942 | Skjomenfjord | 20 Aug, 1942 | Skjomenfjord | 19 days | P | View |
| 8. | Kptlt. Heinz-Ehlert Clausen | 26 Aug, 1942 | Skjomenfjord | 21 Sep, 1942 | Narvik | 27 days | P | View |
| 9. | Kptlt. Heinz-Ehlert Clausen | 24 Sep, 1942 | Narvik | 26 Sep, 1942 | Trondheim | 3 days | ||
| 10. | Kptlt. Heinz-Ehlert Clausen | 9 Jan, 1943 | Trondheim | 2 Mar, 1943 | Brest | 53 days | P | View |
| 11. | Kptlt. Heinz-Ehlert Clausen | 19 Apr, 1943 | Brest | 31 May, 1943 | Brest | 43 days | ||
| 12. | Kptlt. Karl-Franz Heine | 13 Jul, 1943 | Brest | 18 Aug, 1943 | Sunk | 37 days | P | View |
7 War patrols (P) located. | ||||||||
