U-boat patrols

Patrol info for U-436

DepartureArrival / FateDuration
6 Oct 1942Kiel12 Nov 1942Lorient38 days


Officers *

Kptlt. Günther Seibicke

Oblt. Walter Otto

Daily positions, sinkings and allied attacks during the patrol of U-436

We have daily positions for all 38 days on this patrol.

Wolfpack operations during this patrol

U-436 operated with the following Wolfpacks during this patrol
   Puma (16 Oct 1942 - 29 Oct 1942)
   Natter (30 Oct 1942 - 6 Nov 1942)

Ships hit by U-436 during this patrol

Date U-boat Commander Name of ship Tons Nat. ConvoyMap
27 Oct 1942U-436Günther Seibicke Frontenac (d.)7,350nwHX-212A
27 Oct 1942U-436Günther Seibicke HMS LCT-2281 [Trans.]291brHX-212B
27 Oct 1942U-436Günther Seibicke Gurney E. Newlin (d.)8,225amHX-212C
27 Oct 1942U-436Günther Seibicke Sourabaya10,107brHX-212D
29 Oct 1942U-436Günther Seibicke Barrwhin4,998brHX-212E

3 ships sunk (15,396 tons) and 2 ships damaged (15,575 tons).

We have a picture of this vessel.
(d.) means the ship was damaged.
[Trans.] indicates the vessel was lost while being transported on another vessel.

General Events during this patrol


3 Nov 1942. The flotilla medical officer was able to give instructions via radio on treatment for an appendicitis case on U-436.

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Attacks on U-436 during this patrol

10 Nov 1942
09.07 hrs, ,Bay of Biscay inbound: boat was surprised by a B-24 Liberator bomber (59 Sqn RAF/C), which dived out of clouds and dropped a stick of six 250lb depth charges in a strafing attack from the port beam. Two fell short, the third bounced off the aft part and the remainder fell over the U-boat which crash dived immediately afterwards. However, the Liberator succeeded in attacking again after a climbing turn, and dropped a second stick of six 250lb depth charges off the starboard beam just ahead of the conning tower, still was visible on the surface. U-436 was badly shaken by the explosions, the rudder and manometer were disabled, the lights went out and many valves sprang open. It seems that the Germans had some difficulty getting the boat under control, as the crew of the aircraft reported that its bow was seen to raise gradually to 60°, until some 15ft were visible. They machine gunned it at close range for six minutes until the U-boat settled down on an even keel and submerged almost stationary, leaving behind a patch of oil and possibly debris. After temporary repairs, the U-boat managed to reach Lorient on 12 November. (Sources: KTB U-436, ADM 199/1783)

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* These are officers that later became commanders themselves.

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