Patrols by U-671
See the profile page for U-671
| Commander | Departure | Arrival | Days | |||||
| 1. | Wolfgang Hegewald | 13 May, 1944 | Kiel | 15 May, 1944 | Marviken | 3 days | ||
| 2. | Wolfgang Hegewald | 26 May, 1944 | Marviken | 27 May, 1944 | Bergen | 2 days | ||
| 3. | Wolfgang Hegewald | 28 May, 1944 | Bergen | 5 Jul, 1944 | Boulogne | 39 days | P | View |
| 4. | Wolfgang Hegewald | 26 Jul, 1944 | Boulogne | 5 Aug, 1944 | Sunk | 11 days | P | View |
2 War patrols (P) located. | ||||||||