| 单词 | pilot chart |
| 例句 | The logbooks were returned to naval authorities or ship owners, who used them to build pilot charts and guide later navigators. Special Report: Icebound - The climate-change secrets of 19th century ship's logbooks 2019-12-11T05:00:00Z Mapping had progressed steadily from the thirteenth century, when Italian merchant-venturers had developed the earliest portolan pilot charts of the Mediterranean, using compass directions and observations to locate harbours. Explorers at sea: centuries of science afloat 2018-12-18T05:00:00Z |
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