Configuring My Boat - Garmin GPSMAP 400 Owner's Manual

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Setting Sonar Alarms
To set a sonar alarm, from the Home screen, select
Alarms > Sonar.
Shallow Water/Deep Water—set an alarm to sound when the depth
is less than or greater than the specified value.
Water Temp—set an alarm to sound when the transducer reports
a temperature that is 2° F (1.1° C) above or below the specified
temperature.
Fish—set an alarm to sound when the unit detects a suspended
target of the specified symbols.
NOTE: You must have a transducer connected. If your unit does
not have a built-in sounder, then you must install a GSD 21 or
GSD 22 sounder module to receive sonar information.
Setting Weather Alarms
To set a weather alarm, from the Home screen, select
Alarms Weather Alarms.
>
NOTE: You must have a subscription to XM WX Weather and
the optional GXM 31 antenna plugged into the XM port on the
back of your unit to view weather information. XM Weather is
available only on GPSMAP 430x/430sx/440x/440sx units. See
the GXM 31 Owner's Manual for more information.
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Configuring My Boat

Configure >
To configure settings for your boat, from the Home screen, select
Configure
Auto Guidance—set the Auto Guidance parameters for your boat:
• Safe Depth—set the minimum depth (referred to the chart
depth datum) to allow when calculating an autoguidance path.
• Safe Height—set the minimum height (referred to the chart
height datum) of a bridge that your boat can safely travel
under.
Keel Offset—offset the surface reading for the depth of a keel. This
makes it possible to measure depth from the bottom of your keel
instead of from the transducer's location. Enter a positive number to
offset for a keel. You can enter a negative number to compensate for
a large vessel that may draw several feet of water.
To adjust the Keel Offset:
Configure >
1. From the Home screen, select Configure > My Boat > Keel
Offset.
2. Use the ROCKER to set the value of the keel offset.
3. Press SELECT to accept the number.
> My boat.
NOTE: Press MENU
to cancel your changes and return to the
My Boat screen.
GPSMAP 400 Series Owner's Manual
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