Events on this day

23 July

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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 (0) Launched (4) Commissioned (2)
No U-boat orders on this dateNo boats laid down on this date1941: U-587, U-588
1942: U-640
1943: U-721
1942: U-187U-632
These are commissioned boats. For more see our Shipyard pages.

Allied Ships hit on this date

 U-boatCommanderName of shipTonsCountryConvoy
 U-129WittOnondaga 2,309   am
 U-752SchroeterGarmula 5,254   br
 U-407BrüllerHMS Newfoundland (59) (d)8,800   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


Aircraft presumed shot down:
British Swordfish (Sqdn 815)

This aircraft failed to return from a U-boat sweep in the eastern Mediterranean.


U-591. U-591 was twice attacked by an American B-24 Liberator off Cape de Sao Roque, Brazil, but each time escaped by diving. (Blair, vol 2, page 370)

U-466. American B-18 and B-24 bombers attacked the boat. No damage. (Blair, vol 2, page 366)

U-boats lost

1943: U-527 , U-598 , U-613 +

131 men died when those 3 U-boats were lost on this date. 15 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

There were no men lost from U-boats on this date, 23 July.

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

Personnel Information

The following men were born on this day:
Erich Müller-Bethke (1917), Hermann Rossmann (1918), Heinrich Schonder (1910), Werner Zapf (1915).

The following men died on this day:
Gottfried Holtorf (1943), Helmut Köppe (1943), Willibald Ulbing (2007).

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 July

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 Lorient, France: U-34


From Brest, France: U-371
From Bökfjord: U-652
From Kiel, Germany: U-129, U-752
From Windau: U-139

U-boats entering base:
To Brest, France: U-202 (37 days)
To St. Nazaire, France: U-98 (31 days)
To Trondheim, Norway: U-82 (4 days)


From Bergen, Norway: U-376
From Brest, France: U-213 (lost days later)
From Kiel, Germany: U-462, U-595
From Skjomenfjord: U-657


U-boats entering base:
To Bordeaux, France: U-193 (63 days), U-195 (126 days), U-461 (2 days)
To Brest, France: U-218 (2 days)
To Toulon, France: U-565 (37 days)


From Hammerfest, Norway: U-716, U-957
From Lorient, France: U-333 (lost days later)
From Narvik, Norway: U-278

U-boats entering base:
To Grand Hotel U-242 (3 days)
To Harstad U-636 (27 days)
To Kiel, Germany: U-1061 (3 days)
To Lorient, France: U-107 (75 days), U-260 (2 days), U-608 (2 days)
To Narvik, Norway: U-965 (31 days)

U-boats at sea on 23 July

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


U-30, U-34, U-57, U-59, U-61, U-62, UA.
7 boats at sea.


U-66, U-68, U-74, U-79, U-81, U-93, U-94, U-95, U-97, U-109, U-123, U-124, U-125, U-126, U-140, U-141, U-145, U-203, U-204, U-331, U-371, U-372, U-401 (+), U-431, U-561, U-562, U-564, U-565, U-652, UA.
30 boats at sea.


U-43, U-66, U-67, U-71, U-77, U-84, U-86, U-89, U-90 (+), U-97, U-98, U-108, U-109, U-116, U-126, U-129, U-130, U-132, U-134, U-154, U-155, U-160, U-161, U-162 (+), U-163, U-164, U-166 (+), U-171 (+), U-173, U-176, U-201, U-202, U-203, U-209, U-210 (+), U-213 (+), U-217, U-254, U-332, U-375, U-377, U-379 (+), U-402, U-403, U-405, U-437, U-454, U-458, U-460, U-461, U-462, U-463, U-505, U-507, U-508, U-509, U-510, U-511, U-552, U-553, U-561, U-562, U-564, U-565, U-571, U-572, U-575, U-582, U-588 (+), U-589, U-592, U-593, U-595, U-597, U-598, U-600, U-601, U-607, U-609, U-654 (+), U-657, U-658, U-704, U-752, U-754 (+).
85 boats at sea.


U-20, U-43 (+), U-66, U-81, U-84 (+), U-86, U-117 (+), U-134 (+), U-155, U-159 (+), U-168, U-172, U-177, U-178, U-181, U-183, U-185 (+), U-188, U-190, U-196, U-197 (+), U-198, U-199 (+), U-230, U-255, U-257, U-269, U-277, U-306, U-307, U-333, U-340, U-355, U-358, U-359 (+), U-371, U-373, U-375 (+), U-382, U-387, U-403 (+), U-406, U-407, U-415, U-445, U-453, U-455, U-459 (+), U-466, U-468 (+), U-489 (+), U-508, U-510, U-511, U-516, U-532, U-533 (+), U-566, U-571, U-572 (+), U-586, U-591 (+), U-600, U-601, U-604 (+), U-615 (+), U-618, U-625, U-629, U-634 (+), U-647 (+), U-648, U-653, U-664 (+), U-667, U-703, U-711, U-713, U-732, U-757.
80 boats at sea.


U-9, U-24, U-181, U-196, U-198 (+), U-214 (+), U-247, U-275, U-300, U-309, U-333 (+), U-354, U-370, U-425, U-475, U-479, U-481, U-516, U-518, U-530, U-534, U-537, U-539, U-546, U-547, U-621, U-667 (+), U-668, U-673, U-679, U-736 (+), U-802, U-804, U-855 (+), U-857, U-858, U-859 (+), U-861, U-862, U-921, U-956, U-957, U-992, U-995, U-1062 (+).
45 boats at sea.


1 boats at sea.

General Events on 23 July

We have no events listed in the calendar for this date, 23 July.


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