28.5.10 Accuracy Of Automatic Route Steering - Furuno FEA-2107-BB Operator's Manual

Interrupted turn
• If the turn has already started, the set course display on the Autopilot FAP-2000 shows the new course value.
• Push the RADIUS CONTROL button on the Autopilot FAP-2000 control panel.
• Now the manual steering is enabled and your turn continues with previously set values of course and radius.
• Using the tiller, set the new intended course.
Example:
Actual course = 45°, new course = 120°, route turn was enabled. At the moment the ship's heading is 60°, the
helmsman wishes to change the course to 90°. The set course already shows 120°. Push the RADIUS CONTROL
button on the Autopilot FAP-2000 control panel then use the tiller to set the new course to 90°. The turn will be
finished to that value.
Too fast or too slow turn
This is used in case the ship is not performing the planned radius and the radius must be modified.
1. If the actual turning is too fast, use the tiller on the Autopilot FAP-2000 control panel to increase the radius.
2. With some chosen radar models you can also use the RADIUS INCR button. Push the button once.
The new situation is shown on the radar screen. The same logic applies for too slow turning.

28.5.10 Accuracy of automatic route steering

Accurate route steering is defined as a small cross-track error when automatically following a route. Two of the
route parameters - Drift compensation and Gyro error compensation - have a significant effect on the accuracy of
route steering. If you need the most accurate route steering, then both of these parameters should be enabled. Before
activating the Gyro error compensation, see section 19.9 Gyro Error Correction to find the available methods for
gyro error compensation.
28. Steering with FURUNO Autopilot FAP-2000
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