Cargo ships rarely have superstructure (above the main deck). There is a pilot bridge with a chimney on board. There are engines and living quarters under the bridge. The rest of the ship can hold as much cargo as possible.

Ships mainly carrying goods and less than 12 passengers. A cargo hold in which most of the spaces are used to store cargo. There are many types of cargo ships, which vary greatly in size, with displacement ranging from hundreds of tons to hundreds of thousands of tons. As a means of transport, compared with other means of transport, ships have the advantages of large carrying capacity and low operating costs. With the development of the world economy, modern transport ships have formed a huge fleet with various types, complex technology and high specialization.