Radar Observer · Collision Avoidance — CPA
The closest point of approach (CPA) of a radar target is:
- AThe target's present range
- BThe minimum range the target will reach if both vessels hold course and speed✓ Correct
- CThe target's true course
- DThe range at which the target was first detected
Explanation
CPA is the predicted minimum distance between the two vessels assuming both maintain present course and speed — the key measure of how close, and therefore how dangerous, the encounter will be.
Authority: Radar Plotting (USCG topic)
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