Setting The Keel Offset; Sailboat Autopilot Operation; Wind Hold; Setting The Wind Hold Type - Garmin GPSMAP 8400 series Owner's Manual

Setting the Keel Offset

You can enter a keel offset to compensate the surface reading
for the depth of a keel, making it possible to measure depth from
the bottom of the keel instead of from the transducer 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.
1
Complete an action, based on the location of the transducer:
• If the transducer is installed at the water line
the distance from the transducer location to the keel of the
boat. Enter this value in steps 3 and 4 as a positive
number.
• If the transducer is installed at the bottom of the keel
measure the distance from the transducer to the water
line. Enter this value in steps 3 and 4 as a negative
number.
2
Select Settings > My Vessel > Depth and Anchoring >
Keel Offset.
3
Select or based on the location of the transducer.
4
Enter the distance measured in step 1.

Sailboat Autopilot Operation

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.
16
, measure
CAUTION

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
,
.
• To adjust the wind hold angle in increments of 10°, hold
.

Tack and Gybe

You can set the autopilot to perform a tack or gybe while
heading hold or wind hold is engaged.

Tacking and Gybing from Heading Hold

1
Engage heading hold
2
Select Menu > Tack/Gybe.
3
Select a direction.
The autopilot steers your boat through a tack or gybe.

Tacking and Gybing from Wind Hold

Before you can engage wind hold, you must have a wind sensor
installed.
1
Engage wind hold
2
Select Menu > Tack/Gybe.
3
Select Tack or Gybe.
The autopilot steers your boat through a tack or gybe, and
information about the progress of the tack or gybe appears
on the screen.

Setting a Tack and Gybe Delay

The tack and gybe delay allows you to delay steering a tack and
gybe after you initiate the maneuver.
1
From the autopilot screen, select Menu > Autopilot Setup >
Sailing Setup > Tack Delay.
2 Select the length of the delay.
3 If necessary, select Done.

Enabling the Gybe Inhibitor

NOTE: The gybe inhibitor does not prevent you from manually
performing a gybe using the helm or step steering.
The gybe inhibitor prevents the autopilot from performing a
gybe.
1
From the autopilot screen, select Menu > Autopilot Setup >
Sailing Setup > Gybe Inhibitor.
2
Select Enabled.
When properly connected to an optional Garmin sounder
module and a transducer, your compatible chartplotter can be
used as a fishfinder. Different sonar views can help you view the
fish in the area.
The adjustments you can make to each sonar view vary
depending on the view you are in and the chartplotter model,
sounder module, and transducer you have connected.

Sonar Views

The sonar views available vary depending on the type of
transducer and optional sounder module connected to the
(Engaging the Autopilot, page
(Engaging Wind Hold, page

Sonar

or
or
28).
16).
Sonar