Heading capture
When the vessel is turning in AUTO mode, an instant re-press on the
AUTO key or the rotary knob activates the heading capture
function. This will automatically cancel the turn, and the vessel will
continue on the heading read from the compass the very moment
you pressed the AUTO key or the rotary knob.
NAV mode
Ú
Note: NAV mode requires a compatible navigator connected to
the network.
It is not possible to select NAV mode if heading information is
missing, or if steering information is not received from the
external chartplotter.
Warning: NAV mode should only be used in open
waters. Navigation mode must not be used while
sailing, as course changes may result in unexpected
tacks or gybes!
In NAV mode the autopilot uses steering information from an
external navigator to direct the vessel to one specific waypoint
location, or through a series of waypoints.
In NAV mode, the autopilot's heading sensor is used as heading
source for course keeping. Speed information is taken from SOG or
from selected speed sensor. The steering information received from
the external navigator alters the set course to direct the vessel to
the destination waypoint.
To obtain satisfactory navigation steering, the autopilot system
must have valid input from the navigator. Autosteering must be
tested and determined satisfactory prior to entering NAV mode.
Ú
Note: If the navigator does not transmit a message with
bearing to next waypoint, the autopilot will steer using Cross
Track Error (XTE) only. In that case you must revert to AUTO
mode at each waypoint and manually change set course to
equal bearing to next waypoint and then select NAV mode
again.
Autopilot modes | AP™ 48 Operator Manual
19