Under IMO Tracking standards, how many targets can be tracked simultaneously?

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Multiple Choice

Under IMO Tracking standards, how many targets can be tracked simultaneously?

The number represents how many targets an ARPA-equipped radar can keep in active tracking at the same time. Under IMO standards, that limit is twenty targets. This keeps the system able to update each target’s present position, course, speed, and the predicted CPA/TCPA with reliable frequency, so you can quickly assess which threats require action. If more than twenty targets appear, the radar can still display them, but not all can be actively tracked; you’d typically designate additional targets to track or rely on manual plotting for the rest. The smaller numbers would restrict your ability to monitor traffic in busy areas and could hinder timely collision avoidance.

The number represents how many targets an ARPA-equipped radar can keep in active tracking at the same time. Under IMO standards, that limit is twenty targets. This keeps the system able to update each target’s present position, course, speed, and the predicted CPA/TCPA with reliable frequency, so you can quickly assess which threats require action. If more than twenty targets appear, the radar can still display them, but not all can be actively tracked; you’d typically designate additional targets to track or rely on manual plotting for the rest. The smaller numbers would restrict your ability to monitor traffic in busy areas and could hinder timely collision avoidance.

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