Learn how to build yourself a boat in your backyard. our complete boat plans collection is available for free and immediate download. it is the largest wood boat. Wooden boat plans for sale: the flat bottom san juan dory, 21′ nexus dory, 23′ wooden shoe, and 27′ st. pierre dory. Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories..