Just looking at a common boat plan it’s easy to see why so many things can go wrong. other than getting feet, inches and eighths of inches onto timber at full size. Classic wooden boat plans . a collection of plans for the classic wooden boats plans- the models vary in size but i prefer to work on models that are about 1m in. Free boat plans for the backyard home builder, plywood and wooden sailboats, rowboats, dinghies motorboats.