16.1.1 Lightning conductors are to be fitted to each mast of all wood, composite, and steel ships having wooden masts or topmasts. They need not be fitted to steel ships having steel masts. Where lightning conductors are fitted they are to comply withPt 6, Ch 2, 14 Electrical equipment for use in explosive gas atmospheres or in the presence of combustible dustsof the Rules and Regulations for the Classification of Ships (hereinafter referred to as the Rules for Ships).