Patrols by U-331
See the profile page for U-331
| Commander | Departure | Arrival | Days | Tons | |||||
| 1 | Oblt. Hans-Diedrich von Tiesenhausen | 2 Jul 1941 | Kiel | 19 Aug 1941 | Lorient | 49 days | P | View | |
| 2 | Oblt. Hans-Diedrich von Tiesenhausen | 24 Sep 1941 | Lorient | 11 Oct 1941 | Salamis | 18 days | 372 | P | View |
| 3 | Oblt. Hans-Diedrich von Tiesenhausen | 12 Nov 1941 | Salamis | 3 Dec 1941 | Salamis | 22 days | 31,100 | P | View |
| 4 | Kptlt. Hans-Diedrich von Tiesenhausen | 14 Jan 1942 | Salamis | 28 Feb 1942 | La Spezia | 46 days | P | View | |
| 5 | Kptlt. Hans-Diedrich von Tiesenhausen | 4 Apr 1942 | La Spezia | 19 Apr 1942 | Salamis | 16 days | P | View | |
| 6 | Kptlt. Hans-Diedrich von Tiesenhausen | 9 May 1942 | Salamis | 21 May 1942 | Messina | 13 days | P | View | |
| 7 | Kptlt. Hans-Diedrich von Tiesenhausen | 25 May 1942 | Messina | 15 Jun 1942 | La Spezia | 22 days | P | View | |
| 8 | Kptlt. Hans-Diedrich von Tiesenhausen | 5 Aug 1942 | La Spezia | 10 Aug 1942 | La Spezia | 6 days | P | View | |
| 9 | Kptlt. Hans-Diedrich von Tiesenhausen | 12 Aug 1942 | La Spezia | 19 Sep 1942 | La Spezia | 39 days | P | View | |
| 10 | Kptlt. Hans-Diedrich von Tiesenhausen | 7 Nov 1942 | La Spezia | 17 Nov 1942 | Sunk | 11 days | 9,135 | P | View |
| 242 days | 40,607 | ||||||||
10 War patrols (P) located. 242 days at sea during patrols. War patrols are shown with grey background. Tons indicate tonnage of ships sunk or damaged during the patrol, if any. Warships are included. | |||||||||