Events on this day

20 May

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This is a run-down from several databases on our site. It's meant to give a clear picture of events on this date, all year round.

U-boat Shipyard report

Ordered (0) Laid down (7) Launched (3) Commissioned (5)
No U-boat orders on this date1935: U-12
1940: U-403
1941: U-615, U-616
1943: U-1023, U-1024
1944: U-2504
1942: U-525
1943: U-985, U-986
1942: U-465
1943: U-313U-979
1944: U-1057U-1131
These are commissioned boats. For more see our Shipyard pages.

Allied Ships hit on this date

 U-boatCommanderName of shipTonsCountryConvoy
 U-109FischerHarpagus 5,173   brHX-126
 U-111KleinschmidtSan Felix (d)13,037   brOB-322
 U-138GramitzkyJavanese Prince 8,593   br
 U-556WohlfarthBritish Security 8,470   brHX-126
 U-556WohlfarthCockaponset 5,995   brHX-126
 U-556WohlfarthDarlington Court 4,974   brHX-126
 U-94KuppischJohn P. Pedersen 6,128   nwHX-126
 U-94KuppischNorman Monarch 4,718   brHX-126
 U-98GysaeRothermere 5,356   brHX-126
 U-108ScholtzNorland 8,134   nwON-93
 U-155PieningSylvan Arrow 7,797   paOT-1
 U-158RostinDarina 8,113   brON-93
 U-431DommesEocene 4,216   brAT-46
 U-506WürdemannHalo 6,986   am
 U-753Manhardt von MannsteinGeorge Calvert 7,191   am
 U-197BartelsBenakat 4,763   nl
* Unless otherwise noted the ships listed here were sunk. (d) = damaged

See all Allied ships hit by U-boats during WWII.

Attacks on this day


U-197. The boat was strafed and bombed by an American B-25 Mitchell bomber northeast of Ascension Island. The periscope was damaged and one man wounded by gunfire, who died the next day. [Bootsmaat Viktor Rainer] (Ritschel)

U-boats lost

1943: U-258 +

49 men died when this U-boat was lost. There were no survivors.
U-boats marked with + were lost with all hands.

- For more information on U-boat losses check out our Fates section.

U-boat Men Lost or Wounded

There were no men lost from U-boats on this date, 20 May.

- For more information on Men lost from U-boats check out this page.

Personnel Information

The following men were born on this day:
Hans-Jürgen Lauterbach-Emden (1919), Siegfried Lüdden (1916), Hans-Harald Speidel (1917).

The following men died on this day:
Wilhelm von Mässenhausen (1943), Hans-Bernhard Michalowski (1941).

See the entire U-boat commander listing showing all U-boat commanders.
We might include more officers (Allied and Axis) at a later date.

U-boat departures and arrivals on 20 May

This section shows the U-boat departures and arrivals from bases on this day of the year. Current country names shown with harbour names. Boats entering port display days at sea during that patrol.


From Wilhelmshaven, Germany: U-28


From St. Nazaire, France: U-73


From Bergen, Norway: U-405, U-592
From Lorient, France: U-67, U-129, U-701 (lost 49 days later)

U-boats entering base:
To Kristiansand U-134 (2 days), U-153 (3 days), U-214 (3 days)
To Lorient, France: U-701 (2 days)
To St. Nazaire, France: U-136 (58 days), U-402 (56 days)


From Bergen, Norway: U-467 (lost 6 days later)
From Brest, France: U-435 (lost 51 days later)
From Kiel, Germany: U-667
From Konstanza, Rumania: U-9
From Toulon, France: U-431

U-boats entering base:
To St. Nazaire, France: U-359 (32 days)


From Bergen, Norway: U-344, U-348, U-476 (lost 6 days later)
From Brest, France: U-275, U-441
From Kiel, Germany: U-862
From Kristiansand: U-980
From Narvik, Norway: U-387
From Skjomenfjord: U-742

U-boats entering base:
To Arendal U-247 (3 days)
To Bergen, Norway: U-293 (2 days)
To Egersund U-290 (3 days), U-1000 (3 days)
To Gotenhafen U-1061 (3 days)
To Ramsund, Norway: U-1060 (8 days)
To St. Nazaire, France: U-267 (85 days)

U-boats at sea on 20 May

Boats entering port on this day are not counted, but boats departing for patrol are. (+) indicates the boat was lost during this patrol.


U-8, U-9, U-28, U-37, U-43, U-60, U-62.
7 boats at sea.


U-38, U-43, U-46, U-66, U-69, U-73, U-74, U-93, U-94, U-96, U-97, U-98, U-103, U-105, U-106, U-107, U-109, U-111, U-138, U-556, U-557, UA.
22 boats at sea.


U-66, U-67, U-68, U-69, U-81, U-83, U-86, U-87, U-89, U-94, U-96, U-98, U-103, U-106, U-107, U-108, U-109, U-116, U-124, U-125, U-126, U-128, U-129, U-130, U-135, U-155, U-156, U-157 (+), U-158 (+), U-159, U-161, U-162, U-172, U-201, U-205, U-209, U-213, U-331, U-333, U-373, U-404, U-406, U-431, U-432, U-436, U-455, U-502 (+), U-504, U-506, U-507, U-553, U-558, U-559, U-564, U-565, U-566, U-569, U-578, U-582, U-586, U-588, U-590, U-591, U-593, U-594, U-653, U-701 (+), U-703, U-751, U-752, U-753.
71 boats at sea.


U-9, U-66, U-67 (+), U-91, U-92, U-103, U-105 (+), U-107, U-119 (+), U-123, U-126 (+), U-129, U-154, U-161, U-177, U-178, U-180, U-181, U-190, U-195, U-196, U-197 (+), U-198, U-199 (+), U-202 (+), U-211, U-214, U-217 (+), U-218, U-221, U-223, U-228, U-229, U-230, U-231, U-232 (+), U-251, U-260, U-262, U-264, U-267, U-304 (+), U-305, U-336, U-340, U-354, U-377, U-378, U-383, U-402, U-403, U-405, U-407, U-409, U-413, U-414 (+), U-418 (+), U-431, U-435 (+), U-436 (+), U-448, U-454, U-459, U-460, U-461, U-466, U-467 (+), U-468, U-488, U-504, U-511, U-513 (+), U-514, U-515, U-521 (+), U-525, U-527 (+), U-533, U-552, U-558 (+), U-561, U-569 (+), U-575, U-584, U-603, U-607, U-608, U-614, U-621, U-625, U-634, U-636, U-639, U-641, U-642, U-645, U-650, U-664, U-666, U-667, U-707, U-709, U-731, U-752 (+), U-755 (+), U-760, U-951 (+), U-952, U-953.
109 boats at sea.


U-9, U-23, U-24, U-107, U-129, U-155, U-170, U-178, U-181, U-183, U-188, U-190, U-196, U-198 (+), U-230, U-275, U-289 (+), U-344, U-347, U-348, U-362, U-365, U-385, U-387, U-425, U-441, U-453 (+), U-471, U-476 (+), U-477 (+), U-490 (+), U-505, U-516, U-534, U-537, U-539, U-541, U-543 (+), U-547, U-548, U-549 (+), U-586, U-675 (+), U-719 (+), U-736, U-737, U-742, U-764, U-843, U-853, U-857, U-859 (+), U-860 (+), U-861, U-952, U-955 (+), U-957, U-995, U-1222 (+).
59 boats at sea.


U-530, U-977, U-979 (+), U-1277 (+), U-3008.
5 boats at sea.

General Events on 20 May

We have no events listed in the calendar for this date, 20 May.


Add more events! - If you know of an interesting event that happened on this day that's missing, or an upcoming event that you'd like to share, please contact us. We already have 782 entries that will appear in due course, so your suggestion may not appear immediately, but we are continuously updating the database.

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