USCG USCG ROR
Set 10 • Question #45 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND A "head on" situation shall be deemed to exist at night when a power-driven vessel sees another power-driven vessel ahead and __________.
A
one sidelight and the masthead light are visible
B
the vessels will pass closer than half a mile
C
both vessels sound one prolonged blast
D
both sidelights and masthead light(s) are visible
✓ Correct Answer
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'A "head on" situation shall be deemed to exist at night when a power-driven vessel sees another power-driven vessel ahead and', the correct requirement is: 'both sidelights and masthead light(s) are visible'. This standard ensures clear navigational intent and collision avoidance.
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