Especially when they may be sunk in coastal water or the port?
In: Engineering
There are very, very few sunken nuclear vessels, the nine nuclear submarines are the only ones that come to mind. Water is an excellent moderator, that’s why we use it in reactors, so you have to be very close for a long time to be harmed. The oceans are so huge, covering 3/4 of the Earth, that a tiny fraction of ocean life gets close to one. Over time, some nuclear particles leak out, but again the tremendous volume of the ocean works pretty effectively to disperse the atoms very widely. Certainly there is contamination, but it’s only harmful when it gets above the background level.
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