Navigating With The Ap35 - Simrad AP35 Instruction Manual

2.12 Navigating with the AP35

The AP35 has the capability to use steering information from an external
navigator (GPS, Chart Plotter) to direct the boat to a specific waypoint
location, or through a route of waypoints. In the NAV mode, the AP35 uses
the heading sensor as it's source of heading for course keeping. The steering
and speed information received from the external navigator alters the set
course to direct the AP35 to the destination waypoint.
Note !
Navigational steering must only be used in open waters. The process of
having an external navigation receiver direct an autopilot can be a slow
acting process. By selecting the NAV mode, the AP35 is set for automatic
steering on the current set course and then waits for the user to accept the
course change to the destination waypoint.
To obtain satisfactory navigation steering, the following points must be
fulfilled prior to entering the NAV mode:
• The AP35 autosteering must be tested and found satisfactory.
• The navigation receiver must be operating and the navigation system
• At least one waypoint must be entered and selected as the current
• The navigation source in the AP35 USER SETUP menu must be set for
The AP35 is designed to steer in "mixed mode" operation. This combines
the straight steering capability of cross track error (XTE) steering in
conjunction with the turning capability of bearing mode steering (course to
steer (CTS)).
First Press
Second press
Third press
22083083H
(GPS, Chart Plotter) must be in full operating mode with adequate signal
characteristics for valid position and steering data.
waypoint in the navigation receiver.
the navigator that contains the current waypoint.
WP: WP 001
NAV Brg.
SETUP
Chg.
OK:? Press NAV
N
NAV
SETUP
NAV
SETUP
135
016
.02 Nm
N-HI
135 1.25 Nm
GPS1
Operation
Waypoint Name
Bearing WP-WP (leg)
Required course change
If required course change
is safe, press NAV to accept
XTE Display
Boat is .02 Nm to the left
of track.
Nav. Mode, HI speed param.
Bearing and distance to WP
from present position
Nav source
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