Comment by pmontra

Wouldn't a nuclear powered ship sunk by enemy fire be a nuclear accident on its own? There would be a nuclear reactor on the seafloor, possibly a turned on one, surrounded by failed systems. I don't think it ever happened at war, but while I was looking for [1] I found a number of other incidents. I list them below

[1] https://en.wikipedia.org/wiki/Kursk_submarine_disaster

[2] https://www.sciencedirect.com/science/article/abs/pii/S00295...

[3] https://en.wikipedia.org/wiki/Soviet_submarine_K-19

[4] https://www.ebsco.com/research-starters/history/soviet-nucle...

[5] https://gizmodo.com/sunken-soviet-submarine-is-quietly-leaki...

[6] https://en.wikipedia.org/wiki/Submarine_incident_off_Kildin_...

[7] https://en.wikipedia.org/wiki/Submarine_incident_off_Kola_Pe...