This small boat design is for a simple but very practical dinghy, based on a reliable pram built several years ago. purchase your dinghy building plans!. Find the highest quality sailboat plans here—complete with illustrated step-by-step instruction manuals! sailboat plans for our earlier designs are on 24" x 36. Boatplans.dk – online free and inexpensive boat plans for canoes, small boats, sail boats, motorboats and powerboats. download boat plans right away. – boatplans.dk.