East Coast AIS Vessel Tracks 2013

Automatic Identification Systems (AIS) are a navigation safety device that transmits and monitors the location and characteristics of many vessels in U.S. and...自动识别系统（Automatic Identification Systems，AIS）是一类船舶航行安全设备，可实现对美国及……范围内众多船舶的位置与各项特征的传输与监控。