General purpose work boat plans with 21′ hull, several other free wooden boat plans to choose from: the work boat design, tour boat, bass boat, deck boat, and center. 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. Learn how to build a plywood boat. you can make a great boat out of one sheet of plywood. watch our video here and see how we build a boat. there are links at the end.