Free boat & ship plans boats, ships & anything that floats. this section is dedicated to free boat plans. each plan is available as a zipped file and will either.  8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins.. Boat plans from "science and mechanics" and "boat builder handbook." includes plans for hydroplanes, sailboats, inboards, runabouts, canoes, and kayaks..