Radar Observer · ARPA — Trial Maneuver
The ARPA trial-maneuver function lets the operator:
- AIncrease transmitter power
- BAutomatically steer the ship clear
- CErase all tracked targets
- DEnter a proposed course/speed change and preview its effect on all targets' CPAs before actually maneuvering✓ Correct
Explanation
Trial maneuver simulates a proposed own-ship course and/or speed change (often with a built-in delay for reaction time) and shows the resulting CPAs/TCPAs for every tracked target, so the officer can verify the planned action actually opens the distances before committing — without affecting the live track data.
Authority: IMO Performance Standards for ARPA
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Related Radar Observer questions
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