The OnDeck™ alarm notifications feature is supplemental and should not be relied upon as a primary method to monitor your vessel. The functionality, reliability, and timeliness of the alarm notifications depend on a number of factors that are beyond Garmin®'s control, including but not limited to cellular connectivity/reception and device power.
You will be notified of alarms using the email and text numbers entered (Adding Contacts).
The frequency at which you will receive alarms depends upon several factors. Some alarms, such as the offline alarm, are sent once daily. Other alarms are sent once every 6 hours (Alarm Notification Details).