USCG USCG ROR
Set 14 • Question #164 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND Your vessel is underway but stopped and making no way through the water when fog sets in. Which fog signal should you sound?
A
One prolonged blast on the whistle
B
One prolonged blast and two short blasts on the whistle
C
Two prolonged blasts on the whistle
✓ Correct Answer
D
One short, one prolonged, and one short blast on the whistle
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'Your vessel is underway but stopped and making no way through the water when fog sets in. Which fog signal should you sound', the correct requirement is: 'Two prolonged blasts on the whistle'. This standard ensures clear navigational intent and collision avoidance.
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