Go to mouser or digikey etc. Busman ATC fuse busses. Various sizes and number of busses. You’ll need to buy the crimp connectors as well. Molex crimper will crimp them nicely. Not done a boat
but several aircraft with these, work
nicely, look great.
I use Carling G series switches but they may be a but bulky or dated for you. Good positive snap to them, good current
handling, many bat styles and pole/throw combinations.
I hate and stay away from “switch breakers” like the WG series or the Tyco/Potter Brumfield. Too many failures esp Chinese manufactured.