not familiar with the 33 specifically, but like most boats, you could find more in the battery compartment. There should also be the boats MAIN fuse, usually 40-50Amp, and most likely looks like a shot gun shell. Personally I purchased all new modern fuse holders (the MAIN holder and fuse costs a bit, but worth it) and substituted them so I could use the same type of fuses our cars now use. Much easier to find now a days.
good luck!!
