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. Build a simple wooden boat plans. these plans are called the "anyone’s boat", because as they claim, anyone can build it. you can power it with oars or outboard.. Aluminumboatkit.com the following is a catalog of all the boats we can build, send as unassembled kits, or sell the design plans for. the prices given are for the.