U-boat patrols

Patrol info for U-107

DepartureArrival / FateDuration
16 Nov 1943St. Nazaire8 Jan 1944Lorient54 days


Officers *

Oblt. Volker Simmermacher

Oblt. (R) Emil Ranzau

Heinz Robbert

Daily positions, sinkings and allied attacks during the patrol of U-107

We have daily positions for all 54 days on this patrol.

Wolfpack operations during this patrol

U-107 operated with the following Wolfpacks during this patrol
   Weddigen (24 Nov 1943 - 7 Dec 1943)
   Coronel (7 Dec 1943 - 8 Dec 1943)
   Coronel 2 (8 Dec 1943 - 14 Dec 1943)
   Coronel 3 (14 Dec 1943 - 17 Dec 1943)
   Borkum (18 Dec 1943 - 30 Dec 1943)

Ships hit by U-107 during this patrol

General Events during this patrol

We have no events listed for this patrol.

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Attacks on U-107 during this patrol

4 Jan 1944
19.34 hours, Bay of Biscay: the inbound boat fought off an attack by a four-engined aircraft. No bombs dropped, one crewman slightly wounded by strafing. (Sources: Ritschel)

7 Jan 1944
Between 00.08 and 01.20 hours, inbound in the Bay of Biscay, U-107 was attacked four times by aircraft identified as Liberators, replying each time with AA fire, while nearby, U-621 fired on an aircraft without herself being attacked at 00.10 hours. All bombs fell astern of U-107, causing no damage.

Three aircraft probably attacked U-107 that night: a Canadian Wellington (407 Sqdn RCAF/J, pilot F/O Jordan), a British Halifax (502 Sqdn RAF/F, pilot F/O J.H. Spurgeon) and a second Halifax (53 Sqdn RAF, pilot F/L E.B.A. Le Maistre, RCAF), which was badly damaged by flak hits to the bomb bay and the control surfaces. (Sources: Franks/Zimmerman)

About this data
If you believe we have missed an attack on a German U-boat in this listing please let us know.

See all patrols for U-107

* These are officers that later became commanders themselves.

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