Download and share free model airplane and boat plans. featuring thousands of radio control, control line and free flight freely downloadable plans, 3views and blueprints for model builders.. Build a large wooden sea skiff plans . these plans are for a 17 ft wooden skiff. the happy clam is the latest of over 65 boats having this unusual hull form that have come from the boards of the atkin family during the past 25 years.. A scale model aircraft is a reduced scale replica of a real flying machine – a plane, glider, helicopter, etc. model aircraft is a broader term, referring to any small size unmanned aircraft. basically, there are two major aircraft model groups: flying and non-flying. flying model aircraft range from toy gliders built of foam polystyrene or cardstock to powered rc planes usually made of.