Question 963Rules of the Road90% to pass
BOTH INTERNATIONAL & INLAND While underway in fog, you hear a signal of one prolonged blast followed by three short blasts. Which vessel is required to sound this signal?
AI Explanation
The correct answer is D) A vessel being towed (manned).
The International Regulations for Preventing Collisions at Sea (COLREGS) Rule 35(c) states that "a vessel being towed shall sound the signal prescribed in Rule 34(e)." Rule 34(e) specifies the signal as "one prolonged blast followed by three short blasts."
The other options are incorrect because:
A) A vessel under sail is not required to sound this signal.
B) A vessel at anchor is required to sound a different signal under COLREGS Rule 35(a).
C) A vessel towing another vessel is required to sound a different signal under COLREGS Rule 34(a).
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