USCG Exam PracticePassing distance and CPA from chart plot
An ARPA with automatic acquisition capability is tracking targets. According to the performance standards in 33 CFR §164.38, Appendix A, what is the minimum number of targets the system must be able to automatically track, process, simultaneously display, and continuously update?
- A. 10 targets
- B. 15 targets
- ✓ 20 targetsCorrect
- D. The number is not specified; it depends on the range scale in use
Why C is correct
33 CFR §164.38, Appendix A, paragraph 3.3.1 states that if automatic acquisition is provided, the ARPA must track at least 20 targets, whether automatically or manually acquired. The 10-target minimum applies only when the system provides manual acquisition only, making option A a plausible but incorrect distractor.
Cited:33 CFR §164.38