Setting Up Marine Alarms - Garmin GPSMAP 78 Owner's Manual

• Spot Soundings—allows you to
turn spot soundings on and set
dangerous depths.
• Light Sectors—displays the sector
in which a navigational light is
visible. You can select On to show
light sectors at all times, or you can
select Auto to allow the chartplotter
to automatically filter out light
sectors depending on the zoom
level.
• Symbol Set—allows you to show
NOAA or IALA symbols on the
map.
• Marine Alarm Setup—sets the
anchor drag alarm, off course
alarm, deep water alarm, and
shallow water alarm.
GPSMAP 78 Series Owner's Manual

Setting up Marine Alarms

Setting the Anchor Drag Alarm
You can set an alarm to sound when
you exceed a specified drift distance
while anchored.
1. From the main menu, select Setup
> Marine Settings.
2. Select Anchor Drag Alarm > On.
3. Enter a distance.
4. Select Done.
Setting the Off Course Alarm
You can set an alarm to sound when
you are off course by a specified
distance.
1. From the main menu, select Setup
> Marine Settings.
2. Select Off Course Alarm > On.
3. Enter a distance.
4. Select Done.
Customizing Your Device