Question 540 Rules of the Road
90% to passBOTH INTERNATIONAL & INLAND You are at anchor in fog on a 120 meter powerdriven vessel. You hear the fog signal of a vessel approaching off your port bow. Which signal may you sound to warn of your position?
A
One short, one prolonged, and one short blast
B
One prolonged, one short and one prolonged blast
C
Two short blasts
D
One prolonged blast
AI Explanation
The correct answer is A) One short, one prolonged, and one short blast. This is the correct answer because according to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, a vessel at anchor in fog is required to sound this signal to warn other vessels of its position. This signal indicates that the vessel is at anchor. The other options are incorrect because B) is the signal for a vessel underway but not making way, C) is the signal for a vessel in distress, and D) is the signal for a vessel underway in fog.
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