Traditional passenger ships sailing on rivers and lakes. With large passenger capacity and frequent docking, small quantities of groceries and mail are mostly loaded and unloaded at the floating dock through the gangway. The main structure is relatively thin. If the flow rate of the leg is less than 3 meters per second, the double bottom may not be set. Generally, there are two decks, and the freeboard is low. The safety requirements are lower than those of seagoing ships because of the convenience of the route section.

Passenger ships refer to ships specially used for transporting passengers and their luggage and mail. Those carrying more than 12 passengers shall be regarded as passenger ships. With the development of long-distance air transport, passenger ships have gradually turned to short-distance transport and tourism services.