Originally Posted by Bill Ranson
I have not had anything like this (panel to right of battery switches in attached) on my previous boats. I have breaker boxes as first in line with shore power system and I think this fuse box ? is next in line before charger. Does it require maintenance?
My boat is a 2004 Halvorsen 32GC.
Fuses do not require routine maintenance but you might want to carry spares or at least one spare if they are all the same value.
If you can't figure out what they protect, remove them one at a time and see what doesn't work. Make sure you disconnect the power first. If there is actually 120 (or 240) volts AC on these circuits, having a marine electrician determine what they are there for is probably the best plan.
High value fuses may protect the wiring to the bow thruster and windlass.