A passenger vessel, also known as a LINER, is a type of ship designed to transport passengers from one port to another. It is typically used for long-distance travel, such as international voyages, and is usually equipped with amenities and services to make the journey more comfortable. Liners are often larger than other types of ships and may have multiple decks, allowing them to accommodate more passengers. They are also equipped with safety features, such as lifeboats, to ensure the safety of passengers in the event of an emergency.