USCG Exam Practice · Radar fundamentals and ARPA basics
The IMO Performance Standards for ARPA require that the system be capable of displaying past positions of any tracked target. What is the minimum number of past positions and the minimum time period that must be covered?
- AAt least two past positions over a period of at least four minutes
- BAt least three past positions over a period of at least six minutes
- CAt least four equally time-spaced past positions over a period of at least eight minutes✓ correct
- DAt least six equally time-spaced past positions over a period of at least twelve minutes
Why C is correct
Appendix A to 33 CFR §164.38, paragraph 3.3.5, states the ARPA should be able to display on request at least four equally time-spaced past positions of any targets being tracked over a period of at least eight minutes.
Cited:33 CFR §164.38
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