Raytheon Pathfinder ECDIS Operator's Manual page 63

(3)
Defined by an electronic heading or course over ground (course made good),
rate of turn and turning radius. Steering may be done manually or by the
autopilot. While steering to a course or heading, the information panel will or say
"Heading Control" .
When a course or heading is entered, the ship will continue following the entered
course/heading for 100NM, or until a different mode of operation is selected.
If you select the Steer to Course/Heading command while you are currently
steering to a course/heading, you continue steering to the original
course/heading until you enter a new valid heading and select "OK". A valid
heading is defined by whether the vessel can make the physical rate of turn.
Edition: 30.MAR.2007
Operator Manual
Figure: 1−31 Information Panel Steer to Track Control
Steering Mode Heading Control
Figure: 1−32 Information Panel Heading Control
ECDIS
Heading Control
2−33
R
Raytheon Anschütz GmbH
Germany
3655DOC020102