USCG USCG ROR
Set 10 • Question #48 of 475
Launch Interactive Practice Room BOTH INTERNATIONAL & INLAND You are underway in fog and you hear one prolonged blast followed by two short blasts. This is a vessel __________.
A
towing
✓ Correct Answer
B
engaged on pilotage duty
C
aground in a fairway
D
stopped and making no way through the water
USCG NMC Regulatory Explanation
Under Inland Navigation Rules, for the condition where 'You are underway in fog and you hear one prolonged blast followed by two short blasts. This is a vessel', the correct requirement is: 'towing'. This standard ensures clear navigational intent and collision avoidance.
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