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. Rc boat rudder made simple – learn how to figure out type size, linkage, and placement of the rudder for best steering response for your radio controlled model boat.. Auto giro plane model . a competing design with the airplane, the auto giro was once considered better than a plane. land yacht racers. wind powered land racers..