Zhoushan has many stretches of the coastlines close to deep sea waters, 200 kilometers of which are more than 15 meters deep. There's an abundance of good ports, all of which combined cover an area of 1,000 square kilometers. The principal channels make it possible for Vessels of or above 200,000 DWT to travel and the Xiazhimen international channel is for vessels of or over 300,000 DWT in all weather conditions.
Ports are essential to Zhoushan. After more than 20 years' development, by 2009, 345 cargo berths have been built, 33 of which are for vessels of or above 10,000 DWT, and 5 of which are for vessels of or above 250,000 DWT. Starting as a fishing port, Zhoushan Port has become one of China's major sea ports in the Yangtze River Delta and its neighboring areas, providing bulk cargo transit services for vessels carrying crude oil, ore and coal.
The integration of Ningbo Port and Zhoushan Port has been developing fast since thecross-sea bridge connecting the two cities were built in 2009. Zhoushan Port is making a serious effort to establish itself as one of the country's major ports for storage, delivery and transshipment of energy materials, and as one of the Delta's major logistics bases for foreign trade. It's also trying to help the city to become a developed port city.