Question 959Rules of the Road90% to pass
BOTH INTERNATIONAL & INLAND You are underway in fog and hear one short, one prolonged, and one short blast in succession. What is the meaning of this signal?
AI Explanation
The correct answer is D) A vessel is at anchor, warning of her position.
The signal of one short, one prolonged, and one short blast in succession is the signal given by a vessel at anchor to indicate her position and warn other vessels in the area. This signal is prescribed in the International Regulations for Preventing Collisions at Sea (COLREGS) and the Inland Navigation Rules, which govern the navigation and safety of vessels.
The other options are incorrect because they do not match the prescribed signal for a vessel at anchor. A vessel in distress would use a different sound signal, a vessel towing would use a different signal, and a vessel fishing or hauling nets would not use this particular sequence of blasts.
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