Patrol info for U-20
| Departure | Arrival / Fate | Duration | ||
| 21 Jan 1940 | Wilhelmshaven | 21 Jan 1940 | Helgoland | 1 days |
| 23 Jan 1940 | Helgoland | 31 Jan 1940 | Helgoland | 9 days |
| 4 Feb 1940 | Helgoland | 4 Feb 1940 | Wilhelmshaven | 1 days |
| 11 days | ||||
Commander | Officers * |
Kptlt. Harro von Klot-Heydenfeldt |
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. | Convoy | Map | ||
|---|---|---|---|---|---|---|---|---|---|
| 27 Jan 1940 | U-20 | Harro von Klot-Heydenfeldt |  | Faro (t.) | 844 |  | nw | A | |
| 27 Jan 1940 | U-20 | Harro von Klot-Heydenfeldt | | Fredensborg | 2,094 |  | da | B | |
| 27 Jan 1940 | U-20 | Harro von Klot-Heydenfeldt | | England | 2,319 | | da | C | |
| 27 Jan 1940 | U-20 | Harro von Klot-Heydenfeldt | Hosanger | 1,591 | | nw | D | ||
| 6,848 | |||||||||
4 ships sunk (6,848 tons). Legend | |||||||||
General Events during this patrol
We have no events listed for this patrol.
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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.