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USCG Exam Practice · Passing distance and CPA from chart plot

An ARPA display must have an effective diameter of at least how many millimeters?

  1. A250 mm
  2. B300 mm
  3. C340 mm✓ correct
  4. D400 mm

Why C is correct

Per 33 CFR §164.38, Appendix A, paragraph 3.4.3, the display on which ARPA information is presented must have an effective diameter of at least 340 mm.

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An ARPA display must have an effective diameter of at least how man… — USCG Exam Practice · CaptainsGround