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设备进行自动跟踪的系统。AIS设备提供的信息，诸如独特的识别码、位置、航向和速度等，可于屏幕或电子海图显示与信息系统（ECDIS）上进行展示。该系统旨在协助船舶值班人员，并使海事当局能够追踪和监控船舶的航行动态。