Free plans: absolutely free plans (links to free online boat plans) ariawood boat works (plywood punts, jonboats and one-sheet boats) architectura navalis mercatoria (the 1765 book by frederik hendrik af chapman online). Houseboat plans can give you a start in planning your houseboat building project. check out these free or low cost houseboat plans thanks for taking the time to visit the site. if you follow the links at the. This instructable contains my plans and method for building a boat. it is written as a journal. i’m a novice so please don’t expect exact and 100% correct boat building plans/ advice or.