U-boat losses in May 1943

May of 1943 was the turning point in the Battle of the Atlantic, during which the Third Reich lost 41 U-boats which constituted 25% of its operational strength at the time.

Germany never recovered from this disaster and Dönitz withdrew all but token number of U-boats from battle. This month has been called "Stalingrad of the U-boat arm" by some.

Date	U-boat		Crew	Dead	Survivors	Notes
2 May	U-465	+	48	48	0
4 May	U-109	+	52	52	0
4 May	U-439		49	40	9
4 May	U-659		47	44	3
5 May	U-638	+	44	44	0
6 May	U-125	+	54	54	0
6 May	U-192	+	55	55	0
6 May	U-438	+	48	48	0
6 May	U-531	+	54	54	0
6 May	U-630	+	47	47	0
7 May	U-209	+	46	46	0
7 May	U-447	+	48	48	0
8 May	U-663	+	49	49	0
11 May	U-528		56	11	45
12 May	U-89	+	48	48	0
12 May	U-186	+	53	53	0
12 May	U-456	+	49	49	0
13 May	U-753	+	47	47	0
14 May	U-237		-	1	-
14 May	U-640	+	49	49	0
15 May	U-176	+	53	53	0
15 May	U-266	+	47	47	0
16 May	U-182	+	61	61	0
16 May	U-463	+	57	57	0
17 May	U-128		54	7	47
17 May	U-646	+	46	46	0
17 May	U-657	+	47	47	0
19 May	U-273	+	46	46	0
19 May	U-954	+	47	47	0
20 May	U-258	+	49	49	0
21 May	U-303		48	20	28
21 May	U-381	+	47	47	0
22 May	U-569		46	21	25	Scuttled
23 May	U-752		46	29	17
25 May	U-414	+	47	47	0
25 May	U-467	+	46	46	0
26 May	U-436	+	47	47	0
28 May	U-304	+	46	46	0
28 May	U-755		49	40	9
31 May	U-440	+	46	46	0
31 May	U-563	+	49	49	0

41 U-boats lost during May 1943 (1785 men died and 183 men survived those losses)
+ means that the boat was lost with all hands.

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U-boat losses in May 1943