Our previous boat
was a WEST system Cross trimaran
. We owned her for 40 years, and of those ~15 were spent in the tropics.
No real problems overall, but moisture will help you find the spots that were not adequately sealed with epoxy
. Otherwise it's really just keeping the UV away from the epoxy
and good ventilation.
One caveat, our boat
was mostly mahogany plywood
, but some of the deck
was Douglas fir. Doug fir tends to check in the tropical sunlight and moisture changes, this causes cracks in the epoxy coating that need to be dealt with quickly, otherwise moisture will get in. I suspect this is a frequent cause of bad reports on plywood
boats, especially those built on the west coast
of the US where Doug fir is quite common.