Navigation General · ARPA
According to ARPA capabilities, which of the following does ARPA automatically provide?
- AThe target vessel's name and MMSI number
- BPredicted CPA and TCPA for acquired targets✓ Correct
- CThe target's draft and cargo information
- DVoice communication with the target vessel
Explanation
ARPA (Automatic Radar Plotting Aid) automatically tracks acquired radar targets and computes their predicted CPA and TCPA, as well as true and relative vectors. ARPA does not receive AIS data such as vessel name or MMSI; those come from a separate AIS receiver. Draft and cargo are not transmitted by radar.
Authority: Radar Navigation Manual (Pub. 1310), Ch. 6
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