GPSMAP 400/500 Series Owner’s Manual
43
Configuring the Chartplotter
Speed Sources
—specify the sensor used for wind numbers and fuel
economy. Select
wind
or
fuel Economy
to toggle between water
(from a water-speed sensor) and GPS (from the calculated GPS
speed).
auto guidance
—set the automatic guidance parameters:
•
Safe depth
—set the minimum depth (chart depth datum) to
allow when calculating an automatic guidance path. A safe depth
of less than one meter is not allowed when using automatic
guidance.
•
Safe Height
—set the minimum height (chart height datum) of a
bridge that your boat can safely travel under.
•
Shoreline distance
—set the safe distance for your boat from the
shore:
Nearest
,
Near
,
Normal
,
far
, or
farthest
.
Shoreline Distance Auto Guidance Setting
The Shoreline Distance setting indicates how close to the shore you
want the auto-guidance line to be placed. The auto-guidance line
may move if you change this setting while navigating.
The available values for the Shoreline Distance setting (
Nearest
,
Near
,
Normal
,
far
, or
farthest
) are relative, not absolute. To
ensure that the auto-guidance line is placed an appropriate distance
from shore, you can assess the placement of the auto-guidance line
using one or more familiar destinations that require navigation
through a narrow waterway.
To set the distance from shore:
1. Dock your boat or drop anchor.
2. From the Home screen, select
Configure
>
Preferences
>
Navigation
>
Auto Guidance
>
Shoreline Dist.
>
Normal
.
3. From Home screen, select
Where To?
>
Waypoints
.
4. Select a waypoint for a destination that you have navigated to
previously.
5. Select
Navigate To
>
Guide To
.
6. Review the placement of the Auto Guidance line. Determine
whether the line safely avoids known obstacles, and whether the
turns enable efficient travel.
• If the placement of the Auto Guidance line is satisfactory,
select
MENU
>
Navigation Options
>
Stop Navigation
.
Proceed to step 9.
• If the Auto Guidance line is too close to known obstacles,
from the Home screen, select
Configure
>
Preferences
>
Navigation
>
Auto Guidance
>
Shoreline Distance
>
Far
.
• If the turns in the Auto Guidance line are too wide, from the
Home screen, select
Configure
>
Preferences
>
Navigation
>
Auto Guidance
>
Shoreline Distance
>
Near
.
