Marine transportation is the most important mode of transport in international trade. Over two thirds of the total volume of international trade is transported by sea. Most of the imported and exported goods in China are transported by ocean. The advantage of ocean shipping lies in the large volume of shipping, the low shipping cost and the fairway. However, slow speed, high risk of navigation, navigation date is not easy to accurately, is its shortcomings.

In accordance with the mode of operation of the ship, marine transport can be divided into liner transport and chartering transport; According to the classification of the region, container transport can be divided into domestic trade shipping and foreign trade shipping.