Garmin GPSMAP 4008 Owner's Manual page 16

Charts and 3D Chart Views
Selecting the Heading Line Source
The source for the display of the heading line on the chartplotter is determined by the heading line source
setting (Auto or GPS Hdg) and whether heading information is available from a heading sensor.
• If heading information is available from a heading sensor and the source heading is set to Auto, both the
heading line and the vehicle icon will be aligned to the heading from the sensor.
• If heading information is available from a heading sensor and the source heading is set to GPS Hdg, the
heading line will be aligned to the GPS heading, but the vehicle icon will be aligned to the heading from
the sensor.
• If heading information is not available from a heading sensor, both the heading line and the vehicle icon
will be aligned to the GPS heading.
1. From the Home screen, select Charts.
2. Select Navigation Chart or Fishing Chart.
3. Select Menu.
4. Select Chart Setup.
5. Select Chart Appearance > Heading Line > Source.
6. Complete an action:
• Select GPS Hdg.
• Select Auto.
Showing and Configuring Spot Depth Soundings
On the Navigation Chart, you can turn on spot soundings and set a dangerous depth.
1. From the Home screen, select Charts > Navigation Chart > Menu > Chart Setup > Chart Appearance
> Spot Depths > on.
2. Select Spot Depths > Dangerous.
3. Enter the dangerous depth.
4. Select Done.
Configuring Depth Shading
You can customize the appearance of depth shading on the Navigation Chart.
Note: Depth shading is available with a preprogrammed BlueChart g2 or BlueChart g2 Vision data card.
1. From the Home screen, select Charts > Navigation Chart > Menu > Chart Setup > Chart Appearance
> Safety Shading.
2. Complete an action:
• Select Manual (or Change Depth), enter the depth, and select Done. Areas on the chart with depths
shallower than the specified value are shaded in blue, while areas with depths greater than the specified
value are shaded in white. The contour is always drawn at, or deeper than, the selected depth.
• Select Auto to use the depth from the g2 or g2 Vision chart.
12 GPSMAP 4000/5000 Series Owner's Manual
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