The fog flute is a kind of marine whistle instrument.

Traditional marine fog flutes are powered by compressed air and drive the phonetic body to send fog signals. Therefore, they need to be equipped with high-power air compressors, large-volume gas storage tanks and complex gas pipelines. The user's cost is high and the maintenance is inconvenient, which takes up a lot of limited and valuable space on the ship; marine piston-type electric fog flutes integrate air compressors, gas storage tanks and gas pipelines, and are easy to install, debug, and maintain. It completely overcomes the defects in the use of traditional fog flutes, and it is automated and intelligent control. It is a practical and advanced new type of modern marine fog navigation equipment, which is fog navigation. Upgraded products of the flute.