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The operational modes | AP70/AP80 Operator Manual
Enable the Track steering feature
After the Track feature is unlocked, it must be enabled by setting the Track system option to
Track as shown below:
Track steering mode info panel
A
B C
D E
F G
A. DTW: Distance to next waypoint
B. XTD: Cross Track Distance
C. Vessel position relative to leg line
D. CTS: Course to steer (set heading calculated by the autopilot)
E. TRK CRS: Track course to next waypoint
F. STW: Speed through water. Speed of the vessel relative to the surrounding water.
G. SOG: Speed over ground
- If SOG is missing, the speed info will be taken from log (STW). Speed can also be set
manually from the Quick menu (MAN)
Start Track steering
Before the AP80 can be used for track steering, the system must be setup and configured
according to the separate AP70/80 Installation manual. The wiring to the ECDIS system must
be according to previous section, and both the ECDIS system and the AP80 system must be
configured as previously described.
1. Steer the vessel to a position that allows the route to be started on the ECDIS system
- The route will not start if the difference between vessel heading and bearing on leg
exceeds 2*Off course limit, or if the difference between vessel heading and bearing on leg
is more than 90°
- XTD from the imaginary extension of the first leg must not exceed the deviation corridor
2. Activate the selected route on the ECDIS system
3. Once inside the track corridor, press the TRACK key on the AP80 to start automatic Track
steering.
The AP80 will remain in TRACK mode until the vessel reaches end of route, unless certain
error conditions occur which renders the system unable to continue in TRACK mode and
therefore automatically change the mode. At end of route the AP80 will automatically change
to AUTO mode with same heading as on the last leg.
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