Passenger ships are primarily used for carrying passengers and providing waterborne transportation services, covering inland rivers, coastal areas, lakes, and canal networks; Major vessel types include inland passenger ships, coastal passenger ships, Ro-Pax ships, tourist sightseeing ships, high-speed passenger ships, and ferries. Primary power requirements are 50 kW–500 kW for small passenger ships, 500 kW–2000 kW for medium-sized passenger ships, and over 2000 kW for large passenger ships; Weichai's compatible engine models include the WP, WH, and M series, with fuel types covering diesel, LNG, LNG dual-fuel, and battery-electric power.