U-boat patrols

Patrol info for U-23

DepartureArrival / FateDuration
27 Jun 1943Konstanza16 Jul 1943Sevastopol20 days
18 Jul 1943Sevastopol19 Jul 1943Konstanza2 days
22 days
Sometimes patrols were split into several 'legs', for resupply and other matters.


Officers *

Oblt. Rolf-Birger Wahlen

Patrol description

Patrol in the Black Sea between Tuapse, Gagra and Sokhumi. On 14 July, the boat had to abort the patrol because the hull was bent in after some struts failed.

Transfer to Konstanza after repairs in Sevastopol.

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

We have 21 daily positions for the 22 days U-23 was at sea.

Ships hit by U-23 during this patrol

General Events during this patrol


30 Jun 1943. U-23 encountered a Soviet submarine in the Black Sea, but neither boat attacked.

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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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