On federally controlled waters, Vessels less than 65.6 ft. or 20 meters in length are required to carry on board a sound-producing device that can produce a signal audible for one-half mile.
Sound-producing devices may be defined as those devices or objects which have the capability of producing sound when a hit on them is made. Some of them are gongs, bells, whistles, etc.
Such vessels including PWCs are mandated to harbor on board a mouth, hand, or power-operated whistle or horn, or some different standards to construct an efficient sound gesture.
Therefore, it is well described above.
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