Wooden boat plans and kits. many boat plans are offered online. at first everything is very confusing, then you start to get some idea of the different types of boats. Welcome to fiberglass supply’s online shopping cart! for over 30 years we have been providing innovative craftspeople with materials to make their projects a reality.. Scot domergue, designer/builder; firstname.lastname@example.org . marsh duck: length: 18 feet (+ rudder) beam: 42 inches (hull; wings extend to 54 inches.