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2. STEERING MODES
2.11.2
Wind angle mode
There are two wind angle modes: App (Apparent Wind Angle) and TWA (True Wind
Angle).
Wind angle
mode
App
The boat is steered so that the apparent wind angle is
(Apparent
constant. AWA mode requires wind angle and speed
Win Angle)
data from a wind sensor. Use this mode when the wind
is stable.
TWA
The boat is steered so that the true wind angle (in re-
(True Wind
lation to ship's bow) is constant. This mode requires
Angle)
apparent wind angle, apparent wind speed, your
boat's speed and heading. Use this mode when there
is an unstable downwind.
N
Boat's
heading
To select the wind angle mode, do the following:
1. In the Wind mode, long press the
2. Rotate the Course control knob to select the current setting for [Mode Type] then
push the knob.
[Mode Type] also appears on the [Wind Option] menu.
3. Rotate the Course control knob to select an option then push the knob.
4. Press the
2-30
Description
True wind angle
Own boat's
movement
Apparent wind angle
key to close the menu.
True wind
Apparent wind
When running on engine, use
the TWA mode.
The autopilot cannot control your
boat when its speed exceeds the
true wind speed in the App mode,
which can lead to a potentially
dangerous situation.
key to open the menu.
AWA
TWA
Steering mode
indication
W W
App
App
W W
TRUE
NOTICE
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