USCG USCG ROR
Set 16 • Question #228 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND While you are underway, navigation lights must be displayed on your vessel __________.
A
during all periods of restricted visibility
✓ Correct Answer
B
at all times
C
at night only when other vessels may be in the area
D
at night only when vessels are detected on radar
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'While you are underway, navigation lights must be displayed on your vessel', the correct requirement is: 'during all periods of restricted visibility'. This standard ensures clear navigational intent and collision avoidance.
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