Events on this day

20 April

Choose new date to check

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 (4) Launched (4) Commissioned (2)
No U-boat orders on this date1940: U-68
1942: U-963, U-964
1943: U-930
1940: U-121
1942: U-338
1944: U-1057, U-1105
1940: U-120
1944: U-1172
These are commissioned boats. For more see our Shipyard pages.

Allied Ships hit on this date

 U-boatCommanderName of shipTonsCountryConvoy
 U-73RosenbaumEmpire Endurance 8,570   br
 U-73RosenbaumHMS ML-1003 46   br
 U-73RosenbaumHMS ML-1037 46   br
 U-109BleichrodtHarpagon 5,719   br
 U-154KölleVineland 5,587   ca
 U-572HirsackerEmpire Dryden 7,164   br
 U-654ForsterAgra 4,569   sw
 U-654ForsterSteel Maker 6,176   am
 U-565FrankenMichigan 5,594   amUGS-7
 U-565FrankenSidi-Bel-Abbès 4,392   frUGS-7
 U-218 [Mine]StockEthel Crawford 200   br
* 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-970. U-970 was attacked in the Bay of Biscay. Damage minor.

U-boats lost

No U-boats were lost on this date, 20 April.

- 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 April.

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

Personnel Information

The following men were born on this day:
Karl-Heinrich Jenisch (1910), Johann-Friedrich Loos (1921), Wolfgang Schreiner (1917), Joachim Zander (1917).

The following men died on this day:
Rudolf Baltz (2008), Leopold Koch (1945), Gerhard Nolte (1945).

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 April

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.


U-boats entering base:
To Kiel, Germany: U-21 (5 days), U-48 (18 days)


From Kiel, Germany: U-138


From Kristiansand: U-251
From Pola: U-573
From St. Nazaire, France: U-593

U-boats entering base:
To Bergen, Norway: U-209 (14 days)
To Kiel, Germany: U-563 (2 days)
To Kirkenes U-376 (14 days), U-378 (14 days), U-436 (14 days), U-454 (13 days), U-456 (14 days), U-589 (13 days)
To La Pallice U-71 (57 days)


From Bordeaux, France: U-459
From Brest, France: U-218
From La Pallice: U-638 (lost 16 days later)
From Narvik, Norway: U-212
From St. Nazaire, France: U-461

U-boats entering base:
To Bergen, Norway: U-636 (4 days)
To La Pallice U-615 (62 days)
To Trondheim, Norway: U-302 (3 days)


From Kiel, Germany: U-742, U-853, U-861
From La Pallice: U-198 (lost 115 days later)
From Narvik, Norway: U-387

U-boats entering base:
To La Pallice U-333 (67 days)


From Kiel, Germany: U-991

U-boats entering base:
To Bergen, Norway: U-2511 (4 days)
To Horten, Norway: U-287 (6 days), U-539 (8 days), U-977 (8 days), U-1231 (8 days)
To Kristiansand U-1165 (3 days)
To Narvik, Norway: U-427 (12 days)
To Trondheim, Norway: U-978 (55 days)

U-boats at sea on 20 April

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


U-7, U-9, U-10, U-14, U-17, U-19, U-23, U-24, U-25, U-26, U-30, U-34, U-38, U-43, U-46, U-47, U-51, U-52, U-56, U-57, U-58, U-59, U-60, U-61, U-62, U-65.
26 boats at sea.


U-38, U-52, U-65 (+), U-73, U-75, U-95, U-96, U-101, U-103, U-105, U-106, U-107, U-108, U-110 (+), U-123, U-124, U-143, U-147, U-552, U-553, UA.
21 boats at sea.


U-66, U-69, U-81, U-83, U-84, U-86, U-97, U-98, U-103, U-106, U-108, U-109, U-123, U-125, U-130, U-136, U-154, U-160, U-162, U-201, U-202, U-203, U-251, U-333, U-352 (+), U-402, U-403, U-435, U-453, U-455, U-459, U-505, U-506, U-507, U-552, U-553, U-558, U-561, U-562, U-564, U-565, U-566, U-571, U-572, U-573, U-575, U-576, U-582, U-588, U-592, U-593, U-594, U-654, U-751, U-752, U-754, UA.
57 boats at sea.


U-9, U-19, U-68, U-71, U-84, U-92, U-97, U-105 (+), U-108, U-117, U-123, U-125 (+), U-126 (+), U-128 (+), U-129, U-134, U-154, U-155, U-159, U-160, U-161, U-168, U-174 (+), U-176 (+), U-177, U-178, U-180, U-181, U-182 (+), U-183, U-185, U-186 (+), U-188, U-189 (+), U-191 (+), U-192 (+), U-195, U-196, U-197 (+), U-198, U-203 (+), U-209 (+), U-212, U-217 (+), U-218, U-223, U-226, U-231, U-251, U-255, U-257, U-258 (+), U-260, U-262, U-264, U-266 (+), U-267, U-269, U-270, U-306, U-358, U-359, U-371, U-377, U-378, U-381 (+), U-382, U-383, U-386, U-403, U-404, U-413, U-415, U-438 (+), U-448, U-453, U-454, U-455, U-459, U-461, U-462, U-466, U-467, U-468, U-487, U-506, U-509, U-514, U-515, U-516, U-518, U-525, U-528 (+), U-530, U-531 (+), U-532, U-533, U-552, U-565, U-569 (+), U-571, U-584, U-586, U-593, U-598, U-601, U-610, U-613, U-614, U-616, U-618, U-628, U-629, U-630 (+), U-631, U-634, U-638 (+), U-639, U-646, U-648, U-650, U-662, U-703, U-706, U-707, U-709, U-710 (+), U-711, U-732, U-954 (+).
130 boats at sea.


U-18, U-19, U-23, U-66 (+), U-92, U-123, U-129, U-154, U-155, U-170, U-178, U-181, U-188, U-190, U-196, U-198 (+), U-214, U-218, U-230, U-262, U-267, U-276, U-277 (+), U-289, U-307, U-311 (+), U-315, U-354, U-361, U-365, U-385, U-387, U-407, U-488 (+), U-505, U-518, U-537, U-541, U-543 (+), U-546, U-548, U-552, U-565, U-596, U-636, U-667, U-672, U-674 (+), U-703, U-731 (+), U-736, U-739, U-740, U-741, U-765 (+), U-802, U-843, U-852 (+), U-859 (+), U-860 (+), U-861, U-955 (+), U-967, U-969, U-970, U-993, U-1060, U-1061, U-1222 (+).
69 boats at sea.


U-190, U-218, U-234, U-244, U-245, U-249, U-278, U-286 (+), U-293, U-294, U-295, U-307 (+), U-312, U-313, U-315, U-320, U-325 (+), U-326 (+), U-363, U-481, U-485, U-510, U-516, U-518 (+), U-530, U-532, U-541, U-546 (+), U-636 (+), U-711, U-739, U-776, U-805, U-825, U-826, U-853 (+), U-857 (+), U-858, U-873, U-879 (+), U-881 (+), U-889, U-901, U-956, U-979 (+), U-997, U-1009, U-1010, U-1017 (+), U-1023, U-1055 (+), U-1105, U-1107 (+), U-1109, U-1163, U-1202, U-1228, U-1305, U-2322, U-2324, U-2326, U-2329.
62 boats at sea.

General Events on 20 April


U-9 fired torpedoes at the Polish destroyer ORP Blyskawica, which missed.


The following A.P. report was released to the newswires: The Elbe front took on the flavor of naval warfare for a while today. When British tanks drove up to the Elbe, a German submarine in the river opened fire.


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.

Choose new date to check