Navigation mark for assisting ship flow monitoring

The utility model introduces a navigation mark for assisting ship flow monitoring, which comprises a mark body and a tower, the tower is arranged on the mark body, and a monitoring device is arranged at the top of the tower; an instrument cavity is formed in the buoy body, a signal acquisition unit and a network transmission device are arranged in the instrument cavity, and the signal acquisition unit is connected with the network transmission device; the signal acquisition unit is connected with the monitoring device; a mounting platform is arranged on the tower, and a positioning device is arranged on the mounting platform. The number of sailing passing ships is recorded in real time through the camera, large and small ships can be monitored no matter whether an AIS system is installed or not, more flexible and free monitoring is achieved by means of the arrangement of the navigation mark, and compared with a fixed monitoring point in the prior art, the system is more flexible and more convenient to use. Th