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Frequency of the AIS Information Sent From the WatchMate® Transponder

The WatchMate® 850, WatchMate Vision®, XB-6000, and XB-8000 are Class B devices, so it will send position reports every 30 seconds when the boat moves faster than 2 knots; otherwise, it drops back to every 3 minutes. Other information like the vessel's name, size, and type, sends every 6 minutes.


Transmissions not sent via the WatchMate will display a warning symbol. The XB Transponders status LED will change color to orange. Using the vmAIS Configuration and Status Utility or WatchMate App over USB or WiFi can query the reason for the status change.