Naval War Day-by-Day

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UNDER CONSTRUCTION

Auxiliary Cruisers

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April 1940 (U-boat War)

From a successful, if costly, month of February, the u-boat arm was to suffer a period of huge frustration in March 1940.


Summary for the period
U-boat, type, ships sunk

U-9 (IIB) –
U-10 (IIB) -
U-13 (IIB) -
U-14 (IIB) –
U-20 (IIB) -
U-21 (IIB) -
U-23 (IIB) –
U-25 (I) -
U-26 (I) –
U-30 (VII) -
U-37 (IX) –
U-41 (IX) –
U-48 (VIIB) –
U-50 (VIIB) –
U-53 (VIIB) –
U-57 (IIC) –
U-58 (IIC) -
U-59 (IIC) -
U-61 (IIC) –
U-63 (IIC) -

Total: xx ships with a total tonnage of xxx,xxx tons. Not inc xx

The Germans lost x U-boats – x to mines (U-) and x to torpedo/depth-charge attack (xxxxx).




Sources:
Hitler’s U-boat War Volume I (Clay Blair)
Chronology of the War at Sea 1939-45 (Jurgen Rohwer)
www.uboat.net

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April 13

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April 14

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April 15

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April 16

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April 17

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April 18

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April 19

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April 20

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April 21

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April 22

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April 23

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April 24

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Dutch Navy

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Belgian Navy

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UNDER CONSTRUCTION

May 1940 (U-boat War)

From a successful, if costly, month of February, the u-boat arm was to suffer a period of huge frustration in March 1940.


Summary for the period
U-boat, type, ships sunk

U-9 (IIB) –
U-10 (IIB) -
U-13 (IIB) -
U-14 (IIB) –
U-20 (IIB) -
U-21 (IIB) -
U-23 (IIB) –
U-25 (I) -
U-26 (I) –
U-30 (VII) -
U-37 (IX) –
U-41 (IX) –
U-48 (VIIB) –
U-50 (VIIB) –
U-53 (VIIB) –
U-57 (IIC) –
U-58 (IIC) -
U-59 (IIC) -
U-61 (IIC) –
U-63 (IIC) -

Total: xx ships with a total tonnage of xxx,xxx tons. Not inc xx

The Germans lost x U-boats – x to mines (U-) and x to torpedo/depth-charge attack (xxxxx).




Sources:
Hitler’s U-boat War Volume I (Clay Blair)
Chronology of the War at Sea 1939-45 (Jurgen Rohwer)
www.uboat.net

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May 2

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May 3

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May 4