0引言长江白茆沙水道分为南、北2个航道,是连接江尾海头的重要航段,目前受航道条件和航行习惯的影响,白茆沙南水道是大多数船舶航行的选择。随着12.5 m深水航道的开通,进江船舶数量增多,船舶大型化趋势明显,白茆沙水道在承载航运经济的同 0 Introduction The Changjiang Baibian Sha Channel is divided into 2 routes, south and north. It is an important segment connecting the sea to the sea and is affected by the navigation conditions and navigation habits. The Baisha Shanan Channel is the choice of most ships. With the opening of the 12.5-meter deep-water channel, the number of ships entering the river increased, and the trend of large-scale ships became clear. The development of the Baisha Channel,