USCG USCG ROR
Set 5 • Question #349 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND A power-driven vessel underway in fog making NO way must sound what signal?
A
One long blast
B
Two prolonged blasts
✓ Correct Answer
C
One prolonged blast
D
One prolonged and two short blasts
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'A power-driven vessel underway in fog making NO way must sound what signal', the correct requirement is: 'Two prolonged blasts'. This standard ensures clear navigational intent and collision avoidance.
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