Portolan chart
- 波特兰型海图（波特兰海图是航海图，描绘港口和海岸线。13世纪开始，意大利、西班牙、葡萄牙开始制作。这种海图对于航海事业较晚起步的英格兰和荷兰而言是珍宝。portlan源自意大利语portolano，意思是“和港口或海湾相关”）
Portolan chart
-
abstract:
Portolan or portulan charts are navigational maps based on compass directions and estimated distances observed by the pilots at sea. They were first made in the 13th century in Italy, and later in Spain and Portugal.
以上来源于:
WordNet