Garmin GPSMAP 8400 series, Owner'S Manual

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Layline Filter : Filters the layline data based on the time interval
entered. For a smoother layline that filters out some of the
changes in the boat's heading or true wind angle, enter a
higher number. For laylines that display a higher sensitivity to
changes in the boat's heading or true wind angle, enter a
lower number.
User Data Layer Settings
You can show user data, such as waypoints, boundaries, and
tracks, on the charts.
From a chart, select
Menu > Layers > User Data .
Waypoints : Shows waypoints on the chart and opens the list of
waypoints.
Boundaries : Shows boundaries on the chart and opens the list
of boundaries.
Tracks : Shows tracks on the chart.
Other Vessels Layer Settings
NOTE: These options require connected accessories, such as
an AIS receiver, radar, or VHF radio.
From a chart, select
Menu > Layers > Other Vessels .
DSC : Sets how DSC vessels and trails appear on the chart, and
shows the DSC list.
AIS : Sets how AIS vessels and trails appear on the chart, and
shows the AIS list.
Details : Shows other vessel details on the chart.
Proj. Heading : Sets the projected heading time for AIS-
activated and MARPA-tagged vessels.
Collision Alarm : Sets the safe-zone collision alarm ( Setting the
Safe-Zone Collision Alarm , page 12 ).
Water Layer Settings
From a chart, select Menu > Layers > Water .
NOTE: The menu may contain some settings that are not
supported by your installed charts or your present location. If
you make changes to those settings, the changes will not impact
the chart view.
Depth Shading : Specifies an upper and lower depth to shade
between.
Shallow Shading : Sets the shades from the shoreline to the
specified depth.
Spot Depths : Turns on spot soundings and sets a dangerous
depth. Spot depths that are equal to or more shallow than the
dangerous depth are indicated by red text.
Fishing Contours : Sets the zoom level for a detailed view of
bottom contours and depth soundings and simplifies map
presentation for optimal use while fishing.
Relief Shading : Shows the gradient of the bottom with shading.
This feature is available only with some premium maps.
Sonar Imagery : Shows sonar imagery to help show the density
of the bottom. This feature is available only with some
premium maps.
Lake Level : Sets the present water level of the lake. This
feature is available only with some premium maps.
Depth Range Shading
You can set color ranges on your map to show the water depths
where your target fish are currently biting. You can set deeper
ranges to monitor how quickly the bottom depth changes within
a specific depth range. You can create up to ten depth ranges.
For inland fishing, a maximum of five depth ranges can help
reduce map clutter. The depth ranges apply to all charts and all
bodies of water.
Some Garmin LakeVü
™ and premium supplemental charts have
multiple depth range shading by default.
Red From 0 to 1.5 m (from 0 to 5 ft.)
Orange From 1.5 to 3 m (from 5 to 10 ft.)
Yellow From 3 to 4.5 m (from 10 to 15 ft.)
Green From 4.5 to 7.6 m (from 15 to 25 ft.)
Weather Layer Settings
From the Navigation or Fishing chart, select Menu > Layers >
Chart > Weather > .
From a weather chart, select Menu > Layers > Chart >
Weather .
Observed Layers : Sets which observed weather items are
shown. Observed weather is the present weather condition
that are visible now.
Forecast Layers : Sets which forecasted weather items are
shown.
Layer Mode : Shows forecasted or observed weather
information.
Loop : Shows a loop of forecasted or observed weather
information.
Legend : Shows the weather legend, with the severity of the
conditions increasing from left to right.
Weather Subscription : Shows weather subscription
information.
Restore Defaults : Resets the weather settings to factory default
values.
Edit Overlays : Adjusts the data shown on the screen
( Customizing the Data Overlays , page 5 ).
Radar Overlay Settings
From the Navigation or Fishing chart, select Menu > Layers >
Radar > .
From a radar screen, select Menu .
Radar To Standby : Stops radar transmission.
Gain : Adjusts the gain ( Adjusting Gain on the Radar Screen
Automatically , page 37 ).
Sea Clutter : Adjusts the sea clutter ( Adjusting Gain on the
Radar Screen Automatically , page 37 ).
Radar Options : Opens the radar options menu ( Radar Options
Menu , page 38 ).
Other Vessels : Sets how other vessels are displayed on the
radar view ( Other Vessels Layer Settings , page 14 ).
Radar Setup : Opens the radar display settings ( Radar Setup
Menu , page 38 ).
Edit Overlays : Adjusts the data shown on the screen
( Customizing the Data Overlays , page 5 ).
Chart Settings
NOTE: Not all settings apply to all charts and 3D chart views.
Some settings require external accessories or applicable
premium charts.
From a chart, select
Menu > Settings .
Orientation : Sets the perspective of the map.
14 Charts and 3D Chart Views