Wind Angle Mode - Furuno NAVpilot-700 Operator's Manual

2. STEERING MODES
2.10.2

Wind angle mode

There are three wind angle modes: AWA (Apparent Wind Angle) and TWA (True Wind
Angle).
AWA: The boat is steered so that the apparent wind angle is constant. AWA mode re-
quires wind angle and speed data from a wind sensor. Use this mode when wind is
stable.
TWA: The boat is steered so that the true wind angle (in relation to ship's bow) is con-
stant. This mode requires apparent wind angle, apparent wind speed, your boat's
speed and heading. Use this mode when there is an unstable downwind.
True wind
N
angle (TWA)
Own boat's
movement
Boat's
heading
Apparent wind angle (AWA)
To select the wind angle mode, do the following:
1. Press the MENU key to open the menu.
2. Rotate the Course control knob to select
[OTHER MENU] then push the Course
control knob.
3. Rotate the Course control knob to select
[WIND OPTION] then push the knob.
4. Rotate the Course control knob to select
[MODE TYPE] then push the knob.
5. Rotate the Course control knob to select an option then push the
knob.
6. Press the MENU key three times to close the menu.
2-26
True wind
(TW)
When running on engine, use
the TWA mode.
Apparent wind
The autopilot cannnot control your
(AW)
boat when its speed exceeds the
true wind speed in AWA mode,
which can lead to a potentially
dangerous situation.
NOTICE
WIND OPTION
MODE TYPE: AWA
WIND TACK RUD ANGLE: 35
WIND DAMPING: OFF
°
FIXED TACK ANGLE: 20
°
RATE OF SLOW TACK: 3 /s
°
RATE OF FAST TACK: 20 /s
TACK TIMER: OFF
°
AWA
TWA