Question 981Rules of the Road90% to pass
BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in restricted visibility. 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), a vessel that is aground in restricted visibility is required to make the following sound signals:
- A bell signal (answer A is incorrect)
- A gong signal (answer B is incorrect)
The whistle signal, however, is optional in this situation. Therefore, answer C is the correct choice.
The other options (A, B, and D) are incorrect because the bell and gong signals are mandatory, not optional, for a vessel aground in restricted visibility.
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