Patrols by U-821
See the profile page for U-821
| Commander | Departure | Arrival | Days | |||||
| 1. | Oblt. Ulrich Knackfuß | 7 Mar, 1944 | Kiel | 9 Mar, 1944 | Kristiansand | 3 days | ||
| 2. | Oblt. Ulrich Knackfuß | 17 Mar, 1944 | Kristiansand | 18 Mar, 1944 | Bergen | 2 days | ||
| 3. | Oblt. Ulrich Knackfuß | 19 Mar, 1944 | Bergen | 12 Apr, 1944 | Brest | 25 days | P | View |
| 4. | Oblt. Ulrich Knackfuß | 6 Jun, 1944 | Brest | 10 Jun, 1944 | Sunk | 5 days | P | View |
2 War patrols (P) located. | ||||||||