U-boat patrols

Patrol info for U-20

DepartureArrival / FateDuration
21 Jan 1940Wilhelmshaven21 Jan 1940Helgoland1 days
23 Jan 1940Helgoland31 Jan 1940Helgoland9 days
4 Feb 1940Helgoland4 Feb 1940Wilhelmshaven1 days
11 days
Sometimes patrols were split into several 'legs', for resupply and other matters.


Officers *

Kptlt. Harro von Klot-Heydenfeldt

Patrol description

Patrol in the North Sea. The boat had been in a shipyard in Wilhelmshaven but a few hours after its departure they got problems with the diesel engines and had to go to Helgoland for repairs.

Patrol in the North Sea off the east coast of Scotland. The returning boat had to wait in Helgoland due to ice blocking the harbour of Wilhelmshaven.

The boat was returning from a patrol in the North Sea.

Daily positions, sinkings and allied attacks during the patrol of U-20

We have 10 daily positions for the 11 days U-20 was at sea.

Departure from Wilhelmshaven on 21 Jan 1940.
22 Jan 1940 - 23 Jan 1940 - 24 Jan 1940 - 25 Jan 1940 - 26 Jan 1940 - 27 Jan 1940 - 28 Jan 1940 - 29 Jan 1940 - 30 Jan 1940 - 31 Jan 1940 - 1 Feb 1940 - 2 Feb 1940 - 3 Feb 1940 -
Arrival at Wilhelmshaven on 4 Feb 1940.

Ships hit by U-20 during this patrol

Date U-boat Commander Name of ship Tons Nat. ConvoyMap
27 Jan 1940U-20Harro von Klot-Heydenfeldt Faro (t.)844nwA
27 Jan 1940U-20Harro von Klot-Heydenfeldt Fredensborg2,094daB
27 Jan 1940U-20Harro von Klot-Heydenfeldt England2,319daC
27 Jan 1940U-20Harro von Klot-Heydenfeldt Hosanger1,591nwD

4 ships sunk (6,848 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.

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-20 during this patrol

We have no recorded attacks on U-20 duing this patrol.

If you believe we have omitted an attack on U-20 please let us know.

See all patrols for U-20

* These are officers that later became commanders themselves.

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