Garmin GPSMAP 620 Owner's Manual Supplement page 4

• You can display a compass tape at the top of the screen.
1. From the Home screen, touch Charts.
2. Touch the chart you want to view.
3. Touch Menu > Data
4. Touch Compass Tape
• You can overlay chart data and photographs on the Mariner's Eye 3D relief when using a BlueChart g2 Vision card.
1. From the Home screen, touch
2. Touch an option:
• Classic—display without chart data or image data.
• Charts—overlay chart data.
• Photos—overlay image data.
Marine Mode: Other Vessels
• The device displays a solid line for Automatic Identification System (AIS) vessel heading and a dashed line for course over ground.
• You can control the trails for AIS vessels for a position history of the other vessels. The chart displays a line behind each
indicating the path of the vessel. This feature is available on all charts except the Fish Eye 3D chart.
1. From the Home screen, touch Charts.
2. Touch the chart you want to view.
3. Touch Menu > Other Vessels
4. Touch an option:
• Touch the number of minutes that you want to maintain a trail behind each AIS target.
• Touch Off to turn trails off for all vessels.
• You can control the trails for Digital Selective Calling (DSC) vessels for a position history of the other vessels. The chart displays a black
line indicating the path of the vessel, a black dot for each reported position, and a
feature is available on all charts except the Fish Eye 3D chart.
1. From the Home screen, touch Charts.
2. Touch the chart you want to view.
Menu Other Vessels
3. Touch >
4. Touch an option:
• Touch the number of hours to show tracked vessels on the chart. For example, if you select
points less than four hours old for tracked vessels.
• Touch Off to turn trails off for all vessels.
Marine Mode: Automatic Guidance (BlueChart g2 Vision Only)
• There are connecting legs over shallow areas at the beginning and end of the path. This allows you to use automatic guidance to navigate to
a shore-based service. The device sounds an alarm when the boat approaches the shallow leg.
• There is a control for shore-line proximity tolerance, which allows you to set a tighter margin for passage through narrow channels or set a
larger-distance margin from the shoreline.
1. From the Home screen, touch
2. Touch Nearest, Near, Normal, Far, or
This setting is used by the automatic-guidance calculation to determine how close to the shoreline you want the automatic-guidance
line to be. Changing this while navigating an automatic-guidance line will cause the path to be recalculated.
• When following an automatic-guidance line, there is a navigation option to recalculate automatic guidance to the current destination from
the current position of the boat.
1. While navigating an automatic-guidance line, touch
2. Touch Recalculate
2
Bars.
to toggle the compass tape on or off.
Charts Mariner's Eye 3D
>
> AIS Display Setup
DSC Trails.
>
Configure > Navigation
Farthest to indicate how close you want to travel to the shore.
AutoGuidance.
Menu Chart Appearance
> >
> Trails.
blue flag symbol for the last reported position. This
> Auto Guidance > Shoreline
Menu from any chart.
> Style.
4 Hours, the chart displays all trail
Distance.
GPSMAP 620 Owner's Manual Supplement
AIS target