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. Free rowing boat plans for the backyard home builder, build your own rowing boat, dory, folding dinghy or pram using these simple plywood designs.. About dories. dories are one of the few hundreds of year old boat designs to have survived into the 21st century, and for good reason. their sea keeping abilities.