U-boat Patrols

Patrols by U-23

See the profile page for U-23

1Kptlt. Otto Kretschmer25 Aug 1939  Wilhelmshaven4 Sep 1939  Wilhelmshaven11 days P View
2Kptlt. Otto Kretschmer9 Sep 1939  Wilhelmshaven21 Sep 1939  Kiel13 days P View
Kptlt. Otto Kretschmer29 Sep 1939  Kiel30 Sep 1939  Wilhelmshaven2 days 
3Kptlt. Otto Kretschmer1 Oct 1939  Wilhelmshaven16 Oct 1939  Kiel16 days876 P View
4Kptlt. Otto Kretschmer1 Nov 1939  Kiel9 Nov 1939  Kiel9 days P View
5Kptlt. Otto Kretschmer5 Dec 1939  Kiel15 Dec 1939  Kiel11 days2,400 P View
6Kptlt. Otto Kretschmer8 Jan 1940  Kiel15 Jan 1940  Wilhelmshaven8 days11,667 P View
7Kptlt. Otto Kretschmer18 Jan 1940  Wilhelmshaven29 Jan 1940  Wilhelmshaven12 days1,085 P View
8Kptlt. Otto Kretschmer9 Feb 1940  Wilhelmshaven25 Feb 1940  Wilhelmshaven17 days11,596 P View
Kptlt. Otto Kretschmer26 Feb 1940  Wilhelmshaven28 Feb 1940  Kiel3 days 
Kptlt. Heinz Beduhn9 Apr 1940  Kiel10 Apr 1940  Wilhelmshaven2 days 
9Kptlt. Heinz Beduhn13 Apr 1940  Wilhelmshaven3 May 1940  Kiel21 days P View
10Oblt. Rolf-Birger Wahlen27 Jun 1943  Konstanza16 Jul 1943  Sevastopol20 days P View
Oblt. Rolf-Birger Wahlen18 Jul 1943  Sevastopol19 Jul 1943  Konstanza2 days P View
11Oblt. Rolf-Birger Wahlen10 Aug 1943  Konstanza9 Sep 1943  Konstanza31 days35 P View
12Kptlt. Rolf-Birger Wahlen10 Oct 1943  Konstanza11 Nov 1943  Konstanza33 days1,377 P View
13Kptlt. Rolf-Birger Wahlen14 Dec 1943  Konstanza7 Jan 1944  Konstanza25 days P View
14Kptlt. Rolf-Birger Wahlen30 Mar 1944  Konstanza24 Apr 1944  Konstanza26 days56 P View
15Kptlt. Rolf-Birger Wahlen17 May 1944  Konstanza7 Jun 1944  Konstanza22 days71 P View
16Oblt. Rudolf Arendt16 Aug 1944  Konstanza10 Sep 1944  26 days2,686 P View
303 days31,849

16 War patrols (P) located. 303 days at sea during patrols (310 days at sea overall).
War patrols are shown with grey background.
Sometimes patrols are split into several entries, boats putting into base for quick repairs and such.

Tons indicate tonnage of ships sunk or damaged during the patrol, if any. Warships are included.

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