28. Trackpilot
28-19
Interrupted turn
• If the turn has already started, the set course display on the Trackpilot shows the new course value.
• Push the RADIUS CONTROL button on the Trackpilot 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 Trackpilot control panel and 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 tiller on the Trackpilot control panel to increase radius.
2. With some chosen radar models you can also use the RADIUS INCR button. Push the button once.
New situation is shown on the radar screen.
The same logic applies for a 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 accuracy of route
steering. If you need most accurate route steering, then both of these parameters should be enabled. Before
activating the Gyro error compensation, see paragraph 19.9 “Gyro Error Correction” to find the available methods
for gyro error compensation.
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