Answer :
Final answer:
When operating a recreational vessel of less than 39.4 feet on federally controlled waters, the correct sound device to have is a whistle. Neither a car horn, bicycle bell, or megaphone is considered a legal sound-producing device for maritime use.
Explanation:
When operating a recreational vessel less than 39.4 feet in length on federally controlled waters, certain legal sound-producing devices are required. According to federal law, the acceptable sound device for this category of vessel is neither a car horn nor a bicycle bell, as these are not of sufficient volume to be audible over long distances on the water. Neither is it a megaphone, considering that a megaphone is not considered as a sound signal device. The correct answer is a whistle. A whistle is a simple yet effective device to make audible signals that can alert other vessels in your vicinity about your location or actions. So, the legal sound device for a recreational vessel under 39.4 feet on federally controlled waters is C) Whistle.
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