Patrol info for U-640
Date lookup for 13 May 1943
| Departure | Arrival / Fate | Duration | ||
| 1 May 1943 | Kiel | 14 May 1943 | Lost | 14 days |
Commander | Officers * |
 Oblt. Karl-Heinz Nagel |
U-640's position on 13 May 1943
Ships hit by U-640 on this date
General Events during this patrol
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Attacks on U-640 during this patrol
13 May 1943
Following an unsuccessful attack on convoy ON(S) 7, U-640 was bombed by an aircraft from Iceland, forcing the boat to dive and lose contact with the convoy. U-640 was sunk by aircraft the next day. (Sources: Blair, vol 2, page 331)
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* These are officers that later became commanders themselves.