Simrad AP26 and AP27 Autopilots
28 20221586B
• The autopilot autosteering must be tested and determined
satisfactory.
• The navigation receiver (GPS, Chart Plotter) must be in full
operating mode with adequate signal characteristics for valid
position and navigation data.
• At least one waypoint must be entered and selected as the
current “Go to” waypoint.
• The navigation receiver (source) for the autopilot will be the
one that is automatically selected in the interface set-up or
manually selected in the User setup menu item called “Source
select” (page 42).
The autopilot 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) and automatic
waypoint shift.
Note ! If the autopilot is connected to a navigation receiver that does
not transmit a message with bearing to next waypoint, it will
pick a XTE message and steer on Cross Track Error only. In that
case you have to revert to AUTO mode at each waypoint and
manually change set course to equal bearing to next waypoint
and then select NAV mode again.
Press the NAV button to activate the NAV prompt display.
NAV
The prompt display shows the
name or number of the next
waypoint (WP), the bearing of the
track line (BWW) from the
previous waypoint to the
destination waypoint, the required
course change (CHG) and the
direction in which the boat will
turn.
Note ! If only one waypoint has been entered the bearing will be from
the present position to the destination waypoint.
Press the NAV button again to accept the waypoint as the
location to steer towards. The autopilot turns the boat onto the
track line.
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