Garmin Echomap Plus 40 series, Owner'S Manual

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When in sailing mode ( Setting the Vessel Type , page 3 ), you
can display laylines on the navigation chart. Laylines can be
very helpful when racing.
From the navigation chart, select MENU > Layers > My Vessel
> Laylines > Setup .
Display : Sets how the laylines and vessel appear on the chart,
and sets the length of the laylines.
Sailing Angle : Allows you to select how the device calculates
laylines. The Actual option calculates the laylines using the
measured wind angle from the wind sensor. The Manual
option calculates the laylines using manually entered
windward and leeward angles.
Windward Angle : Allows you to set a layline based on the
windward sailing angle.
Leeward Angle : Allows you to set a layline based on the
leeward sailing angle.
Tide Correction : Corrects the laylines based on the tide.
Filter Time Constant : 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.
Setting the Keel Offset
You can enter a keel offset to compensate the water depth
reading for the transducer installation location. This allows you
to view the depth of the water below the keel or the true depth of
the water, depending on your needs.
If you want to know the water depth below the keel or the lowest
point of your boat and the transducer is installed at the water
line or anywhere above the end of the keel, measure the
distance from the transducer location to the keel of the boat.
If you want to know the true water depth and the transducer is
installed below the water line, measure the distance from the
bottom of the transducer up to the water line.
NOTE: This option is only available when you have valid depth
data.
1
Measure the distance:
• If the transducer is installed at the water line or
anywhere above the end of the keel, measure the
distance from the transducer location to the keel of the
boat. Enter this value as a positive number.
• If the transducer is installed at the bottom of the keel
and you want to know the true depth of the water,
measure the distance from the transducer to the water
line. Enter this value in as a negative number.
2
Select Settings > My Vessel > Keel Offset .
3
Select if the transducer is installed at the water line, or
select if the transducer is installed at the bottom of the
keel.
Sailboat Autopilot Operation
CAUTION
When engaged, the autopilot controls only the rudder. You and
your crew remain responsible for the sails while the autopilot is
engaged.
In addition to heading hold, you can use the autopilot to maintain
a wind hold. You can also use the autopilot to control the rudder
while tacking and gybing.
Wind Hold
You can set the autopilot to maintain a specific bearing relative
to the current wind angle. Your device must be connected to a
NMEA 2000 or NMEA ® 0183 compatible wind sensor to perform
a wind hold or a wind-based tack or gybe.
Setting the Wind Hold Type
Before you can enable the wind hold type, you must connect a
NMEA 2000 or NMEA 0183 wind sensor to the autopilot.
For advanced autopilot configuration, see the installation
instructions included with your autopilot.
1
From the autopilot screen, select MENU > Autopilot Setup >
Wind Hold Type .
2
Select Apparent or True .
Engaging Wind Hold
Before you can enable the wind hold type, you must connect a
NMEA 2000 or NMEA 0183 wind sensor to the autopilot.
When the autopilot is in standby mode, select Wind Hold .
Engaging Wind Hold from Heading Hold
Before you can enable the wind hold type, you must connect a
NMEA 2000 or NMEA 0183 wind sensor to the autopilot.
With heading hold engaged, select MENU > Wind Hold .
Adjusting the Wind Hold Angle with the Autopilot
You can adjust the wind hold angle on the autopilot when wind
hold is engaged.
• To adjust the wind hold angle in increments of 1°, select or
.
• To adjust the wind hold angle in increments of 10°, hold or
.
28 Sailing Features