Considering the shipping industry right now uses the absolute worst, most polluting terrible fuels they can find as soon as they're in international waters, we have absolutely zero chance they will handle the risks of nuclear responsibly.
Bunker fuel could hypothetically be re-injected into depleted reservoirs, much like brine water which is a useless byproduct of production. This would increase production costs of other components but at the benefit of the world's climate.
This was the case before 2020, but I think it has now been addressed by IMO 2020.
https://www.imo.org/en/MediaCentre/PressBriefings/pages/34-I...
I'm not saying there's 100% adherence, but you're saying this isn't related at all?
[1] https://twitter.com/LeonSimons8/status/1669667629844267008