Patrol info for U-31
Date lookup for 8 Oct 1940
| Departure | Arrival / Fate | Duration | ||
| 16 Sep 1940 | Wilhelmshaven | 8 Oct 1940 | Lorient | 23 days |
Commander | Officers * |
 Kptlt. Wilfried Prellberg |
U-31's position on 8 Oct 1940
Ships hit by U-31 on this date
General Events during this patrol
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Attacks on U-31 during this patrol
8 Oct 1940
U-31 evaded a spread of four torpedoes fired by HMS Trident about 15 miles (24 km) south of Lorient and was then forced to dive when fired on by her deck gun. Trident followed up with some explosive charges, but without result. This was the third time that U-31 had been attacked by an enemy submarine on this patrol. The commander wrote sardonically in the war diary: "Main task of this patrol was to play the target ship for British submarines.".
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* These are officers that later became commanders themselves.