BOTH INTERNATIONAL & INLAND A vessel at anchor will show a __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — ball
Rule 30(a) establishes that a vessel at anchor must exhibit a black ball in the forward part during daylight. This standardized day-shape provides clear, unambiguous visual identification of an anchored vessel's immobile status to all approaching traffic.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.