U-boat patrols

Patrol info for U-66

DepartureArrival / FateDuration
23 Jun 1942Lorient29 Sep 1942Lorient99 days


Officers *

Kptlt. Friedrich Markworth

Oblt. Karl-Hartwig Siebold

Patrol description

The translated war diary of U-66 for this patrol is available on our partner website: uboatarchive.net

Daily positions, sinkings and allied attacks during the patrol of U-66

We have 98 daily positions for the 99 days U-66 was at sea.

Ships hit by U-66 during this patrol

Date U-boat Commander Name of ship Tons Nat. ConvoyMap
9 Jul 1942U-66Friedrich Markworth Triglav6,363yuA
26 Jul 1942U-66Friedrich Markworth TamandarĂ©4,942bzB
28 Jul 1942U-66Friedrich Markworth Weirbank5,150brC
2 Aug 1942U-66Friedrich Markworth HMS MTB-339 (d.) [Mine]32brD
2 Aug 1942U-66Friedrich Markworth HMS MTB-342 (d.) [Mine]32brE
6 Aug 1942U-66Friedrich Markworth Rozewie766poF
29 Aug 1942U-66Friedrich Markworth Topa Topa5,356amG
30 Aug 1942U-66Friedrich Markworth Sir Huon6,049paH
30 Aug 1942U-66Friedrich Markworth West Lashaway5,637amI
31 Aug 1942U-66Friedrich Markworth Winamac8,621brTRIN-3J
9 Sep 1942U-66Friedrich Markworth Peiping6,390swK

9 ships sunk (49,274 tons) and 2 ships damaged (64 tons).

We have a picture of this vessel.
(d.) means the ship was damaged.
[Mine] indicates the vessel was hit by a mine laid by said U-boat.

General Events during this patrol


25 Sep 1942. U-66 put a medical case ashore at El Ferrol, Spain.

Add more events! If you know of an interesting event either missing from this date or an upcoming event that you'd like to share please contact us. We continuously update these databases.

Attacks on U-66 during this patrol

We have no recorded attacks on U-66 duing this patrol.

If you believe we have omitted an attack on U-66 please let us know.

Mine-laying operations during this patrol

U-66 laid mines on the following dates during this patrol:

20 Jul 194200h4801h09ED 6913Port Castries, St. Lucia6 TMB

See all patrols for U-66

* These are officers that later became commanders themselves.

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