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长江下游南通港、张家港、南京港、镇江大港自1983年5月相继对外开放以来,长江下游吴淞～南京海轮航道已成为我国外贸运输的重要通道。位于南通港以下35公里处的白茆沙南水道南槽(下称白茆南槽)是海轮进江驶往目的港的必经之地,现维护水深7.1米(理论深度基准面下),万吨级海轮最大吃水9.8米,加上富裕水深0.7米,要求水深10.5米,若满载进江需乘潮3.4米才能通过白茆南槽浅区。据1986年白茆潮位站实
Since the opening of Nantong Port, Zhangjiagang, Nanjing Port and Zhenjiang Dagang in the lower reaches of the Yangtze River successively since May 1983, the Wusong ~ Nanjing Shipping Line in the lower reaches of the Yangtze River has become an important channel for China’s foreign trade and transportation. The south bank of Baijian Shanan Waterway located 35 kilometers below Nantong Harbor (hereinafter referred to as Baijian South Channel) is an indispensable land for sea-going ships to reach the port of destination. The water depth is 7.1 meters (under the theoretical depth) and 10,000 tons The maximum grade 9.8 m draft of the seagoing vessels, coupled with the wealthy depth of 0.7 meters, requiring water depth of 10.5 meters, if loaded into the river by tide 3.4 meters to pass Baiji South tank shallow area. According to the 1986 Baizu tide station stands