Clarification: I wasn't thinking clearly in terms of unit conversion; 100kw is about as much power as a small car.

This is an ~80 megawatt ship engine. https://en.wikipedia.org/wiki/W%C3%A4rtsil%C3%A4-Sulzer_RTA9...

"Hundreds of megawatts" may be oversized for ship application, but maybe more like 2x to 10x oversized rather than 100x to 1000x. Or maybe not. Apparently they use some pretty powerful reactors in aircraft carriers: https://en.wikipedia.org/wiki/A4W_reactor