As the previous poster said - salt air is everywhere. Electrical connections are highly susceptible to corrosion in these conditions. Clean and coat your battery terminals with anti-corrosion spray, use dielectric grease on cable connections, and so on. The fiberglass sides and roof can handle the salt, but the steel underneath the coach is most at risk - spray it off once in a while.
Roger & Mary
2017 Winnebago Navion 24V (Sold)
2014 Tiffin Phaeton 36GH (Sold)