This four person, fast outboard garvey boat has a small outboard and is simple to build. purchase dinghy quality building plans at kits at bateau.. Welcome to spira international home-built boat plans. spira international offers a wide variety of different power, rowing, and sailing skiffs, dories, and other boat. Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories..