Redskytrader Boatswains Whistle Or Bosun Pipe: Nautical CollectionThis display boatswain whistle is made of brass and copper. It comes in a wooden box with a brass anchor inlay. The whistle is attached to a chain and is about 5 in length. This whistle is meant to be a display item. It does not function as a true boatswain whistle. It will make a gr..