航标AIS的标准电文The standard telegraph message of the navigation marks AIS标准电文21（航标报告）The standard telegraph message 21 (navigation mark report)以1次/3 min的报告率自主发射；Transmitting automatically at the reporting rate of one time every 3 minutes.还可通过VDL链路或外部命令由电文16（指配命令模式）发射。(can be also)transmitted through the VDL link o...
Beacons of AIS standard messageStandard message 21 (beacons report)With 1/3 min report rate independent emission,Still can link or external command VDL through 16 (ZhiPei mod...
AIS standard navigation messageThe standard message 21 (buoy reports)To 1 / 3 min the rate of self-launching of the report;VDL link or through an external command from the me...
