Definition
A whistle buoy is a type of buoy equipped with a whistle that is activated by the motion of the waves. Think of it as a breezy, aquatic noisemaker, alerting ships to hazards or marking channels. The whistle is powered by the rising and falling of the buoy in the water. Unlike a foghorn, it requires no electricity or human intervention. It is reliable and distinctive, providing an audible warning in all weather conditions. It is designed for consistent sound production regardless of the severity of the waves.