Vessel activities seen by AIS

The automatic identification system (AIS) is an automatic tracking system that uses transceivers on ships. Information provided by AIS equipment, such as unique identification, position, course, and speed, can be displayed on a screen or an electronic chart display and information system (ECDIS). AIS is intended to assist a vessel's watchstanding officers and allow maritime authorities to track and monitor vessel movements.

自动识别系统（AIS）是一种利用船舶上的无线电收发器进行自动跟踪的系统。由AIS设备提供的信息，诸如独特的标识、位置、航向和速度等，能够在显示屏或电子海图显示与信息系统中（ECDIS）得以展示。AIS旨在辅助船舶值班人员，并允许海事当局追踪和监控船舶的动态。