Carvel built or carvel planking is a method of boat building where hull planks are fastened edge to edge, gaining support from the frame and forming a smooth surface.. Yacht and boat designs, plans and manuals for the home and professional boat builder. power, sail, paddle, and rowing craft.. Wood. the traditional boat building material used for hull and spar construction. it is buoyant, widely available and easily worked. it is a popular material for.