66
Northstar
Explorer AP380 System
Installation and Operation Manual
Boat heading
Course error
CTS (intended AP380 course, to achieve the SWA
[set wind angle])
SWA (set wind angle), 41°
Wind angle
can be APP (apparent) or TRUE
Wind
APP
Apparent wind angle
The apparent wind angle at the boat. P in front of the angle means the
wind is from port, S means that the wind is from starboard.
CTS
Course to steer
The course to steer to maintain the SWA (set wind angle).
Course error
The difference between APP (wind angle) and SWA (set wind angle).
SWA
Set wind angle
The desired wind angle.
TRUE
True wind angle
The true wind angle at the boat. P in front of the angle means the wind
is from port, S means that the wind is from starboard.
7-3 Wind steering mode
The AP380 has three ways of steering the boat, compass, GPS and wind. To select an appropriate mode,
see section 3-7. In wind mode, the AP380 steers the boat to a set angle to the wind, called SWA (set wind
angle).
7-3-1 Wind steering data
