Definition
A boat whistle is a sound-producing device on a boat, used for signaling and communication. Its loud, distinctive sound alerts other vessels and individuals to the boat's presence, especially in low visibility. Think of it as a car horn, but for the water. The sound is typically produced by compressed air or steam forced through a nozzle. They are crucial for maritime safety, helping to prevent collisions and navigate in fog. Its distinct tone echoes across the water, a necessary sound.