Patrol info for U-231
Date lookup for 21 May 1943
| Departure | Arrival / Fate | Duration | ||
| 13 Apr 1943 | Kiel | 31 May 1943 | La Pallice | 49 days |
Commander | Officers * |
 Kptlt. Wolfgang Wenzel |
U-231's position on 21 May 1943
Wolfpack operations during this patrol
U-231 operated with the following Wolfpacks during this patrol
Star (27 Apr 1943 - 4 May 1943)
Fink (4 May 1943 - 6 May 1943)
Elbe (7 May 1943 - 10 May 1943)
Elbe 1 (10 May 1943 - 14 May 1943)
Mosel (19 May 1943 - 22 May 1943)
Ships hit by U-231 on this date
General Events during this patrol
We have no events listed for this date.
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Attacks on U-231 during this patrol
21 May 1943
Late evening, mid Atlantic in the vicinity of convoy
ON 184: a bomb from an American Avenger aircraft (VC-9 USN, pilot Lt Cdr Drane) from escort carrier USS Bogue (CVE 9) left the boat with a leak in the stern trimming tank. Chlorine gas from the aft battery compartment forced U-231 to return to base. Because both radio transmitters were also damaged, the boat did not respond to calls from BdU, and was supposed lost for a few days until U-305 reported her situation.
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* These are officers that later became commanders themselves.