Raytheon Pathfinder ECDIS Operator's Manual page 218

Operator Manual
7.1.6 The Ship's Heading Vector and Anti−grounding Look Ahead Own
Ship Vector
WARNING
FOR ANTI−GROUNDING INFORMATION TO BE ACCU-
RATE, ALL CHART DATABASES MUST BE UP−TO−
DATE AND VALID.
ECDIS provides options to display course and heading vectors as well as a
search light, see Figure: 7−8. The optional vectors are displayed as an arrows
projecting from the bow of the ship symbol. The searchlight (anti−grounding look
ahead) is displayed as an inverted triangle with the vertex at DR antenna loca-
tion (common reference point) of the boat and the base of the triangle at the top
of the heading vector.
Anti−grounding validation is always performed on the most detailed compiled
chart available, which may not be the chart currently displayed. Because charts
differ in respect to depth areas, it may appear as if anti−grounding validation is
incorrect; but, if you display the most detailed chart for the area, you will find that
anti−grounding validation is being performed accurately for this chart. Due to
chart in−accuracies, anti−grounding validation is not performed on Background,
World, or General charts.
Course Made Good
True Heading
Search Light
Figure: 7−8 Heading Vectors and Search Light
7−12
3655DOC020102 Edition: 30.MAR.2007