Marine reactors need to be refueled after 25 years and that process is extremely expensive. Also, after end-of-life, the reactor needs to be stored securely, fo

Marine reactors need to be refueled after 25 years and that process is extremely expensive. Also, after end-of-life, the reactor needs to be stored securely, for an indefinite period of time. https://en.wikipedia.org/wiki/United_States_naval_reactors#/media/File:Naval_Reactor_Compartment_Packages_in_Trench_94_at_Hanford,_WA.png https://en.wikipedia.org/wiki/United_States_naval_reactors#/...