Patrol info for U-23
| Departure | Arrival / Fate | Duration | ||
| 5 Dec 1939 | Kiel | 15 Dec 1939 | Kiel | 11 days |
Commander | Officers * | |
![]() Kptlt. Otto Kretschmer |
1WO![]() Oblt. Adalbert Schnee |
2WO![]() Oblt. Hans-Diedrich von Tiesenhausen |
Patrol in the North Sea off the east coast of Scotland and the Orkney Islands. Reconnaissance off Kirkwall, Stronsay Firth, St. Magnus Bay and Ura Firth.
Daily positions, sinkings and allied attacks during the patrol of U-23
Legend
means a ship hit (sunk or damaged).
The route is shown in a red line. You may have to zoom out to see all data.
In some cases missing data may make the route appear go overland which U-boats of course never did on patrols.
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We have 3 daily positions for the 11 days U-23 was at sea.
Departure from Kiel on 5 Dec 1939.
6 Dec 1939 - 7 Dec 1939 - 8 Dec 1939 - 9 Dec 1939 - 10 Dec 1939 - 11 Dec 1939 - 12 Dec 1939 - 13 Dec 1939 - 14 Dec 1939 -
Arrival at Kiel on 15 Dec 1939.
Ships hit by U-23 during this patrol
| Date | U-boat | Commander | Name of ship | Tons | Nat. | Convoy | ||
|---|---|---|---|---|---|---|---|---|
| 8 Dec 1939 | U-23 | Otto Kretschmer | Scotia | 2,400 | da | |||
| 2,400 | ||||||||
1 ship sunk (2,400 tons). Legend | ||||||||
General Events during this patrol
1939
12 Dec 1939. On U-23, two later heroes of the U-boat war, Otto Kretschmer and Adi Schnee, fired two torpedoes at a rock which appeared in the darkness to be a warship.
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Attacks on U-23 during this patrol
We have no recorded attacks on U-23 during this patrol.
If you believe we have omitted an attack on U-23 please let us know.
See all patrols for U-23
* These are officers that later became commanders themselves.




