Radar Skills page 3 of ?

The green Te - R vector represents our own ship's true course and speed

The red Te - M vector represents the target's true course and speed

Knowing the targets true heading (Te - M) is needed to determine who should Give Way or Stand On

To establish Te - M, you must first apply your own ship's Te - R vector

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Heading 000     Speed 00
Bearing 000   Range 00.0