What is the nearest sea port to wuxi china?

Jiangyin is about 45 minutes north. Jiangyin Port is one of the five major river ports of the Yangtze River in Jiangsu Province. It is located at the end of river and the start of sea, and the port has 35 km deep-water shoreline of Yangtze River. Currently there are 50 berths along the river that are the level of 1000 tons above, including 21 berths that are the level of 10000 tons above, and it is an important goods distribution base in the downstream of the Yangtze River. If that doesn't meet your needs, you'll need to go to Shanghai.