Question 928Rules of the Road90% to pass
BOTH INTERNATIONAL & INLAND In a dense fog, you hear a whistle signal of one prolonged blast followed by three short blasts. Which vessel is required to sound this signal?
AI Explanation
The correct answer is A) Manned vessel being towed.
According to the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, the signal of one prolonged blast followed by three short blasts is the proper whistle signal for a manned vessel that is being towed. This signal indicates that the towed vessel is not under command and has limited maneuverability.
The other options are incorrect because: B) A vessel not under command would sound a different signal (two prolonged blasts), C) A fishing vessel underway trawling would not use this signal, and D) A pilot vessel underway making a special signal would use a different whistle sequence.
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