Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories.. Proven boat designs, and how-to information for boat building. boat plans are for beginners and have been built by thousands since 1953.. Boat plans catalog – 300 boats you can build! new – electrical design plans; boatbuilding supplies & epoxy; inboard hardware; books & dvds; raptor® fastenings.