Our 2014 Sunseeker 2500TS has only 15 amp fuses in the main panel. They are color coded blue. These are the standard size automotive ATM size. There are also mini fuses for the TVs. I don't have that information. We have never had to replace a fuse, but we carry a bag of spares.
We carry an assortment of fuses as others have suggested, but you should not exceed the fuse amperage rating. If fuses keep blowing, you have a problem other than the fuse. A larger size, say a 20 amp in a 15 amp circuit is asking for trouble.