Furuno GP-33 - Manual (Page 48)

6. ALARMS
6-4
6.4 Alarm Descriptions
Arrival alarm
The arrival alarm informs you that own boat is approaching a destination waypoint.
The area that defines an arrival zone is that of a circle which you approach from the
outside of the circle. The alarm will activate if your boat enters the circle.
How the arrival alarm works
Anchor watch alarm
The anchor watch alarm sounds to warn you that your boat is moving when it should
be at rest. Before setting the anchor watch alarm, set current position as destination
waypoint.
How the anchor watch alarm works
Own boat’s
position
Alarm setting
Destination waypoint
: Alarm released
: Alarm released
Own boat’s
position
Destination
waypoint
Alarm
setting