Events on this day

23 March

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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 (16) Laid down (3) Launched (1) Commissioned (5)
1942: U-298, U-299, U-300, U-1007, U-1008, U-1009, U-1010, U-1013, U-1014, U-1015, U-1016, U-1017, U-1018, U-1271, U-1272, U-12731940: U-161
1942: U-236
1943: U-1199
1943: U-8601942: U-166
1943: U-311
1944: U-775U-1015U-1207
These are commissioned boats. For more see our Shipyard pages.

Allied Ships hit on this date

 U-boatCommanderName of shipTonsCountryConvoy
 U-110LempSiremalm (d)2,468   nw
 U-97HeilmannChama 8,077   brOG-56
 U-124MohrNaeco 5,373   am
 U-587BorcherdtDiala 8,106   brON-52
 U-754OestermannBritish Prudence 8,620   brHX-181
* 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

No attacks found on this date.

U-boats lost

1941: U-551 +
1945: U-1003

62 men died when those 2 U-boats were lost on this date. 31 men survived.

Survivors from U-boats almost always landed in allied captivity.
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


The 105mm deck gun exploded, wounding three men.

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

Personnel Information

The following men were born on this day:
Georg von Bitter (1921), Johann de Buhr (1912), Paul Jacobs (1915), Günther Lüth (1917), Herbert Nollau (1916), Karl Schimpf (1914), Alexander von Zitzewitz (1916).

The following men died on this day:
Horst Geider (1993), Karl Schrott (1941), Werner Strübing (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 23 March

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 Wilhelmshaven, Germany: U-19 (10 days), U-28 (35 days), U-32 (27 days)


U-boats entering base:
To Lorient, France: U-52 (2 days)


From Narvik, Norway: U-403

U-boats entering base:
To Bergen, Norway: U-592 (21 days)
To Lorient, France: U-128 (75 days)
To St. Nazaire, France: U-96 (52 days)


From Bergen, Norway: U-269
From Bordeaux, France: U-181
From Brest, France: U-584, U-613
From Kiel, Germany: U-270, U-646
From La Spezia, Italy: U-596
From St. Nazaire, France: U-267, U-455, U-594, U-662

U-boats entering base:
To Bergen, Norway: U-467 (4 days), U-711 (4 days)
To Brest, France: U-621 (51 days)
To La Pallice U-571 (2 days)
To Lorient, France: U-634 (34 days)
To St. Nazaire, France: U-405 (45 days)


From Bergen, Norway: U-766
From Bordeaux, France: U-198
From Kiel, Germany: U-955, U-974
From Konstanza, Rumania: U-9
From Marviken: U-961 (lost 7 days later), U-993
From Narvik, Norway: U-288 (lost 12 days later), U-315, U-956

U-boats entering base:
To Marviken U-385 (3 days)
To Narvik, Norway: U-277 (4 days), U-355 (4 days)


From Danzig, Germany: U-958

U-boats entering base:
To Bergen, Norway: U-764 (5 days), U-1055 (2 days)
To Horten, Norway: U-2511 (7 days)

U-boats at sea on 23 March

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


U-1, U-2, U-3, U-4, U-21, U-22 (+), U-30, U-34, U-38, U-43, U-46, U-47, U-49, U-51, U-52, U-57.
16 boats at sea.


U-46, U-48, U-69, U-74, U-97, U-98, U-105, U-106, U-110, U-124.
10 boats at sea.


U-66, U-67, U-68, U-71, U-73, U-84, U-85 (+), U-87, U-94, U-97, U-105, U-123, U-124, U-126, U-129, U-135, U-154, U-155, U-158, U-160, U-161, U-202, U-203, U-205, U-209, U-332, U-334, U-371, U-373, U-376, U-378, U-404, U-431, U-435, U-436, U-453, U-455, U-504, U-505, U-506, U-507, U-552, U-553, U-568, U-569, U-571, U-572, U-578, U-582, U-585, U-587 (+), U-588, U-593, U-594, U-652, U-653, U-654, U-655 (+), U-701, U-753, U-754, UA.
62 boats at sea.


U-19, U-24, U-43, U-66, U-67, U-68, U-77 (+), U-81, U-84, U-86, U-89, U-91, U-103, U-105 (+), U-106, U-107, U-109, U-119, U-123, U-126 (+), U-129, U-134, U-154, U-155, U-159, U-160, U-161, U-167 (+), U-168, U-169 (+), U-172, U-174 (+), U-180, U-181, U-182 (+), U-183, U-185, U-188, U-190, U-191 (+), U-195, U-196, U-198, U-202, U-212, U-221, U-228, U-229, U-230, U-251, U-257, U-258 (+), U-260, U-267, U-269, U-270, U-302, U-305, U-306, U-332, U-333, U-336, U-338, U-339, U-354, U-355, U-373, U-375, U-378, U-380, U-404, U-406, U-409, U-410, U-415, U-431, U-435, U-439, U-440, U-441, U-445, U-447, U-448, U-455, U-463, U-468, U-469 (+), U-504, U-506, U-509, U-510, U-513, U-515, U-516, U-518, U-521, U-523, U-526 (+), U-527, U-530, U-558, U-561, U-563, U-564, U-566, U-572, U-584, U-590, U-591, U-592, U-594, U-596, U-598, U-600, U-603, U-608, U-610, U-613, U-615, U-616, U-618, U-625, U-630 (+), U-631, U-632 (+), U-635 (+), U-638, U-641, U-642, U-644 (+), U-653, U-662, U-663, U-664, U-666, U-703, U-704, U-706, U-755, U-758.
140 boats at sea.


U-9, U-20, U-24, U-66 (+), U-68 (+), U-92, U-123, U-129, U-154, U-155, U-168, U-170, U-178, U-181, U-188, U-190, U-196, U-214, U-218, U-223 (+), U-228, U-255, U-262, U-267, U-276, U-278, U-288 (+), U-302 (+), U-307, U-311 (+), U-312, U-313, U-315, U-333, U-354, U-361, U-371, U-413, U-415, U-421, U-437, U-448 (+), U-453, U-455 (+), U-466, U-471, U-488 (+), U-505, U-510, U-518, U-532, U-541, U-546, U-548, U-549, U-550 (+), U-552, U-608, U-618, U-621, U-667, U-672, U-674, U-711, U-741, U-763, U-766, U-802, U-821, U-843, U-851 (+), U-852 (+), U-856 (+), U-956, U-960, U-961 (+), U-962 (+), U-963, U-968, U-969, U-970, U-976 (+), U-986 (+), U-990, U-993, U-1062, UIT-24.
87 boats at sea.


U-190, U-218, U-242 (+), U-299, U-307, U-310, U-312, U-313, U-315, U-318, U-321 (+), U-324, U-325 (+), U-363, U-396 (+), U-399 (+), U-483, U-510, U-518 (+), U-530, U-532, U-546 (+), U-548 (+), U-668, U-711, U-716, U-722 (+), U-773, U-774 (+), U-775, U-776, U-778, U-805, U-826, U-843, U-853 (+), U-857 (+), U-858, U-861, U-868, U-879 (+), U-880 (+), U-905 (+), U-953, U-965 (+), U-968, U-978, U-992, U-995, U-997, U-1001 (+), U-1002, U-1019, U-1022, U-1024 (+), U-1058, U-1063 (+), U-1064, U-1106 (+), U-1109, U-1169 (+), U-1195 (+), U-1202, U-1203, U-1233, U-1235 (+), U-2321.
67 boats at sea.

General Events on 23 March


On attempting to fire on a freighter with the deck gun the water-tight plug was not removed from the barrel. The subsequent explosion caused damage severe enough to force a return to port.


U-1106 sailed from Kristiansand, Norway on her first and last patrol.


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