Clinker built (also known as lapstrake) is a method of boat building where the edges of hull planks overlap, called a "land" or "landing." in craft of any size planks. Clinker boat design. i did not know if you had actually done this to completion of a clinker boat from a computer hull boat design practice poor man’s. Clinker or lapstrake boat construction is an ancient method of constructing ship hulls that is still used today. find out more about this unique construction method.