Patrol info for U-421
| Departure | Arrival / Fate | Duration | ||
| 19 Feb 1944 | Brest | 1 Apr 1944 | Toulon | 43 days |
Commander | Officers * |
 Oblt. Hans Kolbus |
Daily positions, sinkings and allied attacks during the patrol of U-421
We have daily positions for all 43 days on this patrol.
Departure from Brest on 19 Feb 1944.
20 Feb 1944 - 21 Feb 1944 - 22 Feb 1944 - 23 Feb 1944 - 24 Feb 1944 - 25 Feb 1944 - 26 Feb 1944 - 27 Feb 1944 - 28 Feb 1944 - 29 Feb 1944 - 1 Mar 1944 - 2 Mar 1944 - 3 Mar 1944 - 4 Mar 1944 - 5 Mar 1944 - 6 Mar 1944 - 7 Mar 1944 - 8 Mar 1944 - 9 Mar 1944 - 10 Mar 1944 - 11 Mar 1944 - 12 Mar 1944 - 13 Mar 1944 - 14 Mar 1944 - 15 Mar 1944 - 16 Mar 1944 - 17 Mar 1944 - 18 Mar 1944 - 19 Mar 1944 - 20 Mar 1944 - 21 Mar 1944 - 22 Mar 1944 - 23 Mar 1944 - 24 Mar 1944 - 25 Mar 1944 - 26 Mar 1944 - 27 Mar 1944 - 28 Mar 1944 - 29 Mar 1944 - 30 Mar 1944 - 31 Mar 1944 -
Arrival at Toulon on 1 Apr 1944.
Ships hit by U-421 during this patrol
General Events during this patrol
We have no events listed for this patrol.
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Attacks on U-421 during this patrol
2 Mar 1944
03.09 hrs, off Cape St. Vincent, Portugal: a British Wellington Mk XIV bomber (RAF Sqdn 179, pilot S/L R.G. Knott) located U-421 on radar and attacked using the Leigh Light, but the nose turret guns jammed after 40 rounds. Flak then knocked out the starboard engine, causing the six depth charges to miss, and another AA hit in the bomb bay disabled the radar. The crew had to jettison all superfluous equipment, including the damaged radar, to keep flying on one engine, and reached base after three hours. (Sources: Franks/Zimmerman)
About this data
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See all patrols for U-421
* These are officers that later became commanders themselves.