U-boat patrols

Patrol info for U-23

DepartureArrival / FateDuration
5 Dec 1939Kiel15 Dec 1939Kiel11 days


Officers *

Kptlt. Otto Kretschmer

Oblt. Adalbert Schnee

Oblt. Hans-Diedrich Freiherr von Tiesenhausen

Patrol description

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

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. ConvoyMap
8 Dec 1939U-23Otto Kretschmer Scotia2,400daA

1 ship sunk (2,400 tons).

We have a picture of this vessel.

General Events during this patrol


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 duing 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.

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