Atkin & co boat plans, boat designs, boat building, william atkin, john atkin, billy atkin, small boats, good boats. About our free boat plans: the free boat plans listed here are public domain plans. we have put them together into a more usable format than most free boat plans. We have power boat building designs of all types such as power cats, cruisers, and more. view jon boat deck plans & boat cabin plans for more details..