USCG USCG ROR
Set 4 • Question #325 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND You are in charge of a power-driven vessel making way in dense fog. You observe what appears to be another vessel on radar half a mile distant on your port bow and closing. You must __________.
A
sound the danger signal
B
exchange passing signals
C
sound one prolonged blast
✓ Correct Answer
D
sound one short, one prolonged, and one short blast
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'You are in charge of a power-driven vessel making way in dense fog. You observe what appears to be another vessel on radar half a mile distant on your port bow and closing. You must', the correct requirement is: 'sound one prolonged blast'. This standard ensures clear navigational intent and collision avoidance.
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