SHARKHUNTERS
International
History of the German submarine U-20

Conning tower emblems of U-20.
The Olympic Rings signify that one of the Skippers was from Naval Class 1936.
Much of this information, the data, the photos etc. comes directly from the
veterans, the veterans' organizations and is the most accurate available
anywhere..............much of this information is not even known elsewhere.
| TYPE | BUILDER | LAUNCHED |
| II-B | Deutsches Werft (Kiel) | 14 Jan 1936 |
| COMMISSIONED | FELDPOST Nr. | SUNK |
| 1 Feb 1936 | M29421 | 10 Sep 1944 |
| SUNK BY | LOCATION SUNK | POSITION SUNK |
| hew crew | Erekli, Turkey |
No men lost
*
Commanders of U-20 include:
| LAST NAME | FIRST NAME | RANK | FROM | TO | OTHER BOATS | COMMENTS |
| Eckermann | Hans | FK | 1 Feb 1936 | U-A | ||
| Rigele | Hermann | FK | U-10, U-17, U-31, UD-1 and UD-2 | |||
| Pauckstadt | Hans | FK | U-18, U-34, U-30, U-34 (2nd time) and U-193 | |||
| Paulshen | Otto | KK | U-557 | KIA aboard U-557 | ||
| Strater | Wolfgang | Kplt | U-83 and U-614 | KIA aboard U-614 | ||
| Nolke | Kurt | KK | U-263 | KIA aboard U-263 | ||
| Schauenberg | H. | KK | U-577 | KIA aboard U-577 | ||
| Driver | Heinrich | KK | U-23, U-145 and U-371 | |||
| Möhle | Karl Heinz | KK | U-123 | |||
| von Klot- Heydenfeldt |
Harro | Kplt | 17 Jan 1940 | U-4 and U-102 | KIA aboard U-102 | |
| Zetzsche | Hans-Jürgen | Kplt | U-4, U-560 and U-591 | |||
| Schöler | Clemens | Kplt | 27 May 1943 | U-24 | ||
| Grafen | Karl | Oblt zS | 1 Nov 1943 |
U-20 was initially attached to the U-Bootflottille
Lohs and the 1st U-Bootflottille then based at Kiel. In June 1940, she
was transferred to the 21st U-Bootflottille based in Pillau as a Schulboot (school
boat) until September 1942. This was one of the six Type II-B boats that were
decommissioned and disassembled then shipped by rivers and autobahn to the
Rumanian coast. U-20 and the other five were reconstructed
and recommissioned into the 30th U-Bootflottille based out of Costanzia, Rumania
to attack Soviet shipping on the Black Sea.
While with the 1st U-Bootflottille, U-20 had several patrols in
the North Sea, particularly off Northeastern Scotland in October 1939 and also
January 1940. She laid mines off Yarmouth, England over the night of
21 November 1939.
U-20 was recommissioned in the 30th U-Bootflottille on the Black
Sea and she had seven Feindfahrten (war patrols) in the Black Sea against Soviet shipping
including minelaying off the Caucasus on 20 September 1943 and again on 27
February 1944. She was with the 30th U-Bootflottille until the Red Army was closing
in on their base. This boat was sailed across the Black Sea and the crew
scuttled her off the Turkish coast near Erekli.
SHIPS SUNK BY U-20 (Möhle
commanding)
| DATE | NAME | NATION | TYPE | GRT |
| 29 November 1939 | IONIAN * | England | Freighter | 3,114 tons |
| 9 December 1939 | MAGNUS | Denmark | Freighter | 1,339 tons |
| 10 December 1939 | WILLOWPOOL * | England | Freighter | 4,815 tons |
| 13 January 1940 | SYLVIA | Sweden | Freighter | 1,524 tons |
* IONIAN and WILLOWPOOL ran onto mines laid by U-20 on 22 November 1939.
SHIPS SUNK BY U-20 (von Klot Heydenfeldt commanding)
| DATE | NAME | NATION | TYPE | GRT |
| 27 January 1940 | FARO | Norway | Freighter | 844 tons |
| 27 January 1940 | FREDENSBORG | Denmark | Freighter | 2,094 tons |
| 27 January 1940 | ENGLAND | Denmark | Freighter | 2,319 tons |
| 27 January 1940 | HOSANGER | Norway | Freighter | 1,591 tons |
| 29 February 1940 | MARIA ROSA | Italy | Freighter | 4,211 tons |
| 1 March 1940 | MIRELLA | Italy | Freighter | 5,430 tons |
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| FREDENBORG | PESTEL |
SHIPS SUNK BY U-20 (Schöler
commanding)
| DATE | NAME | NATION | TYPE | GRT |
| 30 September1943 | unknown | Soviet | Freighter | 800 tons |
SHIPS SUNK BY U-20 (Grafen commanding)
| DATE | NAME | NATION | TYPE | GRT |
| 16 January 1943 | unknown | Soviet | Tanker | 1,500 tons |
| 19 June 1943 | PESTEL | Soviet | Freighter | 1,850 tons |
| 24 June 1943 | unknown | Soviet | MTB | 15 tons |
| 24 June 1943 | unknown | Soviet | MTB | 15 tons |
| 24 June 1943 | unknown | Soviet | MTB | 15 tons |
| 24 June 1943 | unknown | Soviet | MTB | 15 tons |
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Many thanks to our friend and Sharkhunters Member since
1987 GEORG HÖGEL for all the conning tower emblems used in our monthly
KTB Magazine and also here on the pages of our website. GEORG
was radioman aboard U-30, the first boat into combat, the first to
sink a ship (the liner ATHENIA) and the first into an occupied
French port. When that Skipper (Lemp) took command of U-110,
GEORG was one of the former crew to transfer to the new boat under Lemp.
After the war, he was Professor of Art at a major German university.