*Size 13cm long: With neck chain*Bosun's pipe - Boatswain's Whistle. Made of copper and brass Copper & Brass. The boatswain's pipe is one of the oldest and most distinction pieces of personal nautical equipment and was once the only method other than the human voice of passing orders to men on board ship.Today, more sophisticated communication system prevail, although the pipe is still used for some ceremonies and to draw attention before MC1 announcements.*Bosun's pipe - Boatswain's Whistle Copper & Brass