Coast Guard Exams
Question 984Rules of the Road90% to pass

BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in fog. Which signal is optional?

AI Explanation
The correct answer is C) A whistle signal. According to the International Regulations for Preventing Collisions at Sea (COLREGS), for a vessel that is aground, the use of a whistle signal is optional, while the use of a gong signal and a bell signal are required. Specifically, Rule 35(d) states that a vessel aground must give the bell signal and, if present, the gong signal at intervals of not more than 1 minute. However, the use of a whistle signal is not mandatory in this situation. The other options, A) a gong signal and B) a bell signal, are incorrect because they are required signals, not optional, for a vessel that is aground in fog.

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