Patrol info for U-403
| Departure | Arrival / Fate | Duration | ||
| 13 Jul 1943 | Brest | 18 Aug 1943 | Lost | 37 days |
Commander | Officers * |
 Kptlt. Karl-Franz Heine |
Daily positions, sinkings and allied attacks during the patrol of U-403
We have daily positions for all 37 days on this patrol.
Departure from Brest on 13 Jul 1943.
14 Jul 1943 - 15 Jul 1943 - 16 Jul 1943 - 17 Jul 1943 - 18 Jul 1943 - 19 Jul 1943 - 20 Jul 1943 - 21 Jul 1943 - 22 Jul 1943 - 23 Jul 1943 - 24 Jul 1943 - 25 Jul 1943 - 26 Jul 1943 - 27 Jul 1943 - 28 Jul 1943 - 29 Jul 1943 - 30 Jul 1943 - 31 Jul 1943 - 1 Aug 1943 - 2 Aug 1943 - 3 Aug 1943 - 4 Aug 1943 - 5 Aug 1943 - 6 Aug 1943 - 7 Aug 1943 - 8 Aug 1943 - 9 Aug 1943 - 10 Aug 1943 - 11 Aug 1943 - 12 Aug 1943 - 13 Aug 1943 - 14 Aug 1943 - 15 Aug 1943 - 16 Aug 1943 - 17 Aug 1943 -
Sunk on 18 Aug 1943.
Ships hit by U-403 during this patrol
General Events during this patrol
We have no events listed for this patrol.
Add more events! If you know of an interesting event either missing from this date or an upcoming event that you'd like to share please contact us. We continuously update these databases.
Attacks on U-403 during this patrol
30 Jul 1943
The boat was proceeding on the surface with U-43 when Avenger and Wildcat aircraft from the US escort carrier USS Santee. Both boats dived: two depth charges were dropped on U-403, and a Fido homing torpedo was launched at U-43. U-403 escaped, but U-43 was lost with her crew of 55. (Sources: Blair, vol 2, page 397)
18 Aug 1943
An attack on U-403 on 18 Aug. 1943 in the Atlantic off Dakar in position 14.11N, 17.40W, in which a British Hudson bomber (Sqdn. 200/O) dropped depth charges, was believed to have sunk her, but in fact caused only minor damage.
The boat was sunk later the same day in another attack.
(Sources: 1993-06-01, FDS/NHB)About this data
If you believe we have missed an attack on a German U-boat in this listing please let us know.
See all patrols for U-403
* These are officers that later became commanders themselves.