USCG USCG ROR
Set 8 • Question #420 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND Which vessel MUST show two masthead lights in a vertical line?
A
A power-driven vessel less than 50 meters in length with a 20-meter tow
✓ Correct Answer
B
A sailing vessel towing a small vessel astern
C
A vessel not under command
D
A vessel engaged in dredging
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'Which vessel MUST show two masthead lights in a vertical line', the correct requirement is: 'A power-driven vessel less than 50 meters in length with a 20-meter tow'. This standard ensures clear navigational intent and collision avoidance.
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