Select Settings > Alarms > Navigation.

Arrival

Sets an alarm to sound when you are within a specified distance or time from a turn or a destination.

Anchor Drag

Sets an alarm to sound when you exceed a specified drift distance while anchored.

WARNING

The anchor drag alarm is a tool for situational awareness only and may not prevent groundings or collisions in all circumstances. You are responsible for the safe and prudent operation of your vessel, for remaining aware of your surroundings, and for using safe judgment on the water at all times.

Off Course

Sets an alarm to sound when you are off course by a specified distance.

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Disables and enables all boundary alarms.