Whistle Brass Boatswain Whistle Call Pipe Nautical Marine

Historically the boatswain's call was used to pass commands to the crew when the voice could not be heard over the sounds of the sea. Because of its high pitch, it could be heard over the activities of the crew and bad weather. It is now used in traditional bugle calls such as Evening Colours/Sunset, and in other ceremonies in most modern navies. It is sometimes accompanied by other auditive features such as ruffles and flourishes, voice commands and announcements, or even a gun salute.

It is also the official badge of US Navy quartermasters, chief boatswain's mates, and boatswain's mate and also in the US Naval Sea Cadet Corps.

It was first used as a badge of rank for the Lord High Admiral of England in 1485.