在中国的航海史上,有所谓“下西洋”的远航商贸活动。船从东南沿海出发,经过南海,穿过马六甲海峡,到孟加拉湾,甚而越过印度洋而抵非洲东海岸。航海中以牵星术和罗盘导航。元代汪大渊和明代费信在远航归国后都曾著书以记录航行见闻。他们的著作中都曾言及船舶经过七洲和昆仑时出现“针迷舵失”的现象。舵是以指南针的指向来确定航行路线的,所谓“针迷舵失”意指罗盘上的磁针“迷失”了南北方向。只要磁针尚有磁性,它迷失方向是决不可能的事。对于这历史上的航海之迷迄今未见有文章讨论之。本文就此谈点看法,以就教于读者。 In the history of sailing in China, there is a so-called “Westernization” long-distance commerce and trade. The ship departs from the southeast coast, passes through the South China Sea, crosses the Straits of Malacca, to the Bay of Bengal and even across the Indian Ocean to the east coast of Africa. Sailing in a starvation and compass navigation. Yuan Dynasty Wang Dayu and Ming Dynasty Feixin returned home after voyage have written a book to record the voyage. In their writings, there has been talk of the “loss of the steering wheel” caused by the passing of ships across the Seven Continents and the Kunlun Mountains. The rudder is based on the direction of the compass to determine the sailing route, the so-called “Pin Lost ” means the needle on the compass “lost ” north-south direction. As long as the magnetic needle is still magnetic, it is impossible to lose its direction. So far no articles have been discussed in the past. This article on the point of view, to teach readers.