GPSMAP 176/176C Owner’s Manual 57M AIN MENU > ALARM TABAlarm TabAllows you to define the alarm setting for Anchor Drag, Arrival, OffCourse, Clock, Shallow Water, Deep Water, DGPS, and Accuracy.Nav• Next Turn—sets an alarm for the next turn in your route.Select Off for no Next Turn alarm. Select Dist to enter aspecific distance before the next turn for Next Turn alarm to gooff. Select Time to enter a specific time before the turn for thealarm to go off. Select Auto for the unit to provide a Next Turnalarm at its discretion.• Arrival—sets an alarm to sound when you are a specifieddistance or time away from a destination waypoint. Enter adistance radius or time for sounding the alarm.• Off Course—sets an alarm to sound when you are off yourdesired course by a specified distance. Enter a distance in thedistance field and use the control field to turn the Off Coursealarm on and off.• Anchor Drag—sets an alarm to sound when you haveexceeded a specified drift distance. Enter a value in the distancefield and use the control field to turn the alarm on and off.System• Clock—provides an alarm for the system clock. Enter a timein the time field and turn the alarm on and off from the controlfield menu. Remember to enter alarm times in the same timeformat (UTC or local) you are using for your system. The unitmust be on for the clock alarm to work.• DGPS—sets an alarm to sound when the unit loses adifferential fix.• Accuracy—sets an alarm to sound when GPS accuracy fallsoutside of the user-set value.