Luxury yachts are primarily used for business receptions, private vacations, recreational fishing, marine parties, and family leisure trips, focusing on spatial comfort, luxurious interiors, privacy, and entertainment. Major vessel types include speedboats, luxury cruisers, catamarans, recreational fishing boats, and multi-functional recreational fishing vessels. Primary power requirements range from 300 kW to 1000 kW; Weichai's compatible engine models include the WP13 and M series, with fuel types primarily being diesel.