Raytheon Pathfinder ECDIS Operator's Manual page 68

2.9.1.2 Track Plotter
The ECDIS positions the ship on the electronic chart using information from the
GPS or other positioning sensors. The ship symbol is directional and is oriented
according to your gyro heading. An optional heading vector (an arrow) and
search light (the cone shape) are displayed projecting from the bow of the ship
symbol.
The information panel constantly displays updated information on your position,
speed, and bearing.
The anti−grounding search light will detect and signal a warning if the ship
is about to cross a safety contour area. The length of the heading vector
determines the length of the search light, hence the ship's warning time.
(A general ship alarm will sound if the warning is not acknowledged within
30 seconds).
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Operator Manual
NOTE
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Edition: 30.MAR.2007