Operating since 2019/2020:

https://en.wikipedia.org/wiki/Akademik_Lomonosov

It's in the far north, I'm not sure how much fishing is going on around there, or how a potential radiological leak would spread around.

It looks like each of its two reactors are a good bit more powerful than what is in an Ohio Class Submarine, but far less than what's in a Gerald R Ford class Aircraft carrier. For whatever thats worth