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人们在航海实践中最关注的问题是航行安全和航运效率的提高,而解决这个问题的有效途径之一就是优选航线。所以优选航线的概念并不是最近几年才提出来的新东西,但它以不同的方式经历了整个航海历史阶段。从古代起,航海家就以各种基于水文气象观测的参考资料给出关于选择安全、经济航线的各种咨询。美国邮政局局长弗兰克林还在17世纪就指出了,不熟悉北美海岸附近海流状况的英国海员从朴次茅斯港运邮件到纽约比在横渡大洋过程中利
People are most concerned about the practice of navigation sailing safety and shipping efficiency improvement, and an effective way to solve this problem is to choose the route. So the concept of a preferred route is not something new that has been proposed in recent years, but it has gone through the entire history of navigation in different ways. Since ancient times, navigators have provided various consultations on the selection of safety and economic routes based on various reference materials based on hydro-meteorological observations. The U.S. Postmaster General, Franklin, also pointed out in the 17th century that British seamen, who were unfamiliar with the currents of the coasts off the North American coast, were more likely to travel from Portsmouth to New York than to cross the ocean