DW DocFilm September 7, 2019 02:18:00
Towards the end of the conflict german forces dumped their own munitions in the sea . following their victory the allies also ordered enormous stockpiles of active german ordinance to be sunk at specially chosen sites. in the country the allies did recognize the problem of course they were concerned about some shadowy groups getting hold of the munitions and using them to mount post-war resistance attacks and what have you. so they arrived at a solution fairly quickly tipping it all into the north sea and the baltic anymore and you also see. there you go they generally assign specific location...
Source: archive.org