Yachts mainly include wooden boats, fiberglass boats, Kevlar fiber-reinforced composite boats, aluminum boats and steel boats. At present, fiberglass boats account for a large proportion, and more Kevlar reinforcement materials are used in racing boats, sailing boats and luxury boats; Aluminum boats account for a certain proportion of outboard engine boats and large luxury yachts; Steel boats account for a large proportion of ocean-going luxury yachts above 35 meters.