The Bosun’s Whistle was used on Sailing Ships to cut through the wind and send​ signals to the men high above the sails.

The Bosun’s Whistle produces a piercing call that cuts through the wind and can be heard all over a ship, even high in the sails. By altering how the hand and tongue are held, different pitches can be produced. These will mean different commands. The Bosun’s Whistle dates back to the Crusades, 1248 AD.