一个半世纪前,我国被迫签订了五口通商的不平等条约,上海港由此凭藉着长江流域广大富绕的腹地,逐渐发展成为中国对外开放的工、商、贸、旅的经济交流中心。当时长江口的航道在英帝国把持的海关管辖下,设有上海浚浦局,用挖泥船维持了一定水深。那时上海港国际航线行驶的万吨货轮,以乘潮或减载进出上海 A century and a half ago, China was forced to sign a treaty of unequal trade with five ports of commerce. As a result, Shanghai Port developed into an economic exchange center for China's opening up to the outside world by relying on the vast richness of the Yangtze River basin . At that time the channel of the Yangtze River estuary under the control of the British Empire under the jurisdiction of the Customs, with the Shanghai Chunpu Bureau, dredger maintained a certain depth. At that time, the 10,000-ton freighter on the Shanghai-Hong Kong international route entered or exited Shanghai with influx of passengers or loading and unloading