When nuclear power makes sense for surface combatants

Could increasing warship power demands move fission reactors into smaller surface vessels?

Nuclear power seems plausible for ships around 15,000 tons and above as electrical demand grows, with a reactor for base load and conventional generators for surge and emergency power.

Nuclear power is considered most plausible for surface combatants of about 15,000 tons and above. Lasers and railguns could raise electrical demand until carrying enough conventional fuel for useful endurance becomes difficult. One proposed arrangement uses a reactor for the steady base load, gas turbines for surge power and diesel generators for emergencies. The panel also raises restrictions at ports that refuse nuclear-powered vessels. Even a willing port needs suitable procedures and staff training to handle an emergency. These port-access and support constraints qualify the prediction of wider naval reactor use.