This U.S. industry comprises establishments primarily engaged in building boats. Boats are defined as watercraft not built in shipyards and typically of the type suitable or intended for personal use. Included in this industry are establishments that manufacture heavy-duty inflatable rubber or inflatable plastic boats (RIBs). Illustrative Examples: Dinghy (except inflatable rubber) manufacturing Inflatable plastic boats, heavy-duty, manufacturing Inflatable rubber boats, heavy-duty, manufacturing Motorboats, inboard or outboard, building Rigid inflatable boats (RIBs) manufacturing Rowboats manufacturing Sailboat building, not done in shipyards Yacht building, not done in shipyards Cross-References. Establishments primarily engaged in--