Lowrance HDS Live Operator's Manual page 137

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C
The examples show the target movement (1-5) over 5 radar scans
with the radar in relative motion mode.
In example C, own vessel COG is 0°, and speed is 0 knots.
In example D, own vessel COG is 0°, and speed is 10 knots.
In both examples, the target COG is 270°, and the speed is 20 knots.
The colors in the examples are according to the colors used for
black/green and black/yellow radar palettes:
Red (C1/C2 and D1/D2), indicating the target is on an
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approaching path to own vessel. Its relative speed at that point is
greater than the VelocityTrack speed threshold.
Not colored (C3 and D3/D4), indicating it is temporarily neutral
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because its relative speed at that point is less than the
VelocityTrack speed threshold.
Blue (C4/C5 and D5), indicating the target is diverging away
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from own vessel and its relative speed at that point is greater
than the VelocityTrack speed threshold.
Radar| HDS Live Operator Manual
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