Introducing: myboatplans – "instant boat building!" the complete boat builders resource. over 518 detailed boat plans, schematics, cutting patterns, material lists. Flat bottomed swamp boats: three boats of ancient design. free boat plans and building instructions. published september 12. 2008 last updated september 24. 2008. Boatplans.dk – online free and inexpensive boat plans for canoes, small boats, sail boats, motorboats and powerboats. download boat plans right away. – boatplans.dk.