The default values can be changes at any time when the boat is in a turn.
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.
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.
Prior to entering NAV mode the navigator must be navigating a route or towards a waypoint.
•
Initiate NAV mode by pressing the
NAV
key
•
Confirm to switch to NAV mode in the dialog
Turning in NAV mode
When your vessel reaches a waypoint, the autopilot will give an audible warning and display
a dialog with the new course information.
There is a user defined limit for the allowed automatic course change to next waypoint in a
route. If the course change is more than this set limit, you are prompted to verify that the
upcoming course change is acceptable.
•
If the required course change to the next waypoint is less than the course change limit,
the autopilot will automatically change the course. The dialog will disappear after 8
seconds unless cleared by the
X
key.
Autopilot modes
| AP70 MK2 Operator Manual
25
