|Ordered||2 Feb 1935|
|Laid down||11 Feb 1935||Deutsche Werke AG, Kiel (werk 239)|
|Launched||31 Jul 1935|
|Commissioned||17 Aug 1935||Oblt. Hannes Weingärtner|
|Successes||3 ships sunk, total tonnage 5,133 GRT|
1 warship sunk, total tonnage 1,090 tons
Decommissioned in Gotenhafen (Gdynia, Poland) on 31 July 1944
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-4 did not suffer any casualties (we know of) until the time of her loss.
There was another U-4 in World War One
That boat was launched from its shipyard on 18 May 1909 and commissioned into the Imperial Navy on 1 Jul 1909. The Naval war in WWI was brought to an end with the Armistice signed on 11 Nov, 1918. Read about SM U 4 during WWI.