USCG USCG ROR
Set 15 • Question #189 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND While underway and making way your vessel enters fog. Which fog signal should you sound every two minutes?
A
One prolonged blast
✓ Correct Answer
B
Two prolonged blasts
C
Three short blasts
D
A prolonged blast and three short blasts
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'While underway and making way your vessel enters fog. Which fog signal should you sound every two minutes', the correct requirement is: 'One prolonged blast'. This standard ensures clear navigational intent and collision avoidance.
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