U-boat patrols

Patrol info for U-23

DepartureArrival / FateDuration
9 Feb 1940Wilhelmshaven25 Feb 1940Wilhelmshaven17 days


Officers *

Kptlt. Otto Kretschmer

Oblt. Hans-Diedrich Freiherr von Tiesenhausen

Patrol description

Patrol in the North Sea off the Shetland and Orkney Islands. The boat participated in the operation Nordmark together with U-14, U-22, U-57, U-61 and U-63. The U-boats were placed off the British bases on the Shetland and Orkney Islands for reconnaissance during an unsuccessful sortie of the German battlecruisers Scharnhorst and Gneisenau, the heavy cruiser Admiral Hipper and three destroyers against the British convoys between Norway and Britain between 18 and 20 February.

Daily positions, sinkings and allied attacks during the patrol of U-23

We have 16 daily positions for the 17 days U-23 was at sea.

Ships hit by U-23 during this patrol

Date U-boat Commander Name of ship Tons Nat. ConvoyMap
18 Feb 1940U-23Otto Kretschmer HMS Daring (H 16)1,375brHN-12A
19 Feb 1940U-23Otto Kretschmer Tiberton5,225brB
22 Feb 1940U-23Otto Kretschmer Loch Maddy (t.)4,996brHX-19C

3 ships sunk (11,596 tons).

We have a picture of this vessel.
(t.) means the ship was a total loss (included in ships & tonnage lost).

General Events during this patrol

We have no events listed for this patrol.

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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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