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Garmin AIS Alarms Returning to the ON Position After a Power Cycle
The Automatic Identification System (AIS) is a marine vessel-tracking system used for collision prevention. AIS-compatible chartplotters will display dangerous nearby vessels on the chart. Whenever a connected AIS device detects a possible dangerous target, an alarm will sound and alarm message will show on the chartplotter.
Garmin offers four AIS devices that can be interfaced with a compatible Garmin chartplotter, the AIS 300, AIS 600, AIS 800 or a VHF 300 AIS.
If desired, the audible alarm can be disabled for the AIS system, though the alarm message will still show on the screen. To disable the audible alarm, please follow these steps:
Start from the Home screen
Select Configure
Select Other Vessels
Select Collision Alarm or AIS Alarm
Select Off
The AIS alarms will automatically turn back on after a power cycle of the chartplotter. This is by design and is done so for safety reasons.