Talamex Bosun’s whistle  Brass with chain.

The history of the boatswains call can be traced as far back as 1248, when Greece and Rome used galley slaves. However in 1671 it officially became known as the boatswains call and found a place in the English Navy as a tool for passing orders, making it an honored badge of rank.

Hole: The whole which the air passes over to create sound, like blowing over a bottle.Gun: The long tube that runs along the top of the call, and allows air to travel through.

Shackle: Often used as a guide on where to put your thumb when holding the call. The shackle allows the call to be attached to a boatswains chain.

Keel: The flat bottom piece which forms the body of the call. Named after the keel of a boat.

Buoy: The ball at the end which air resonates in through the hole on top. Named after a round floating buoy.

Low note: The low note is sounded by steadily blowing into the mouthpiece of the gun, with your fingers extended straight upwards as to not obstruct the hole or sound.

High note: This note is played by controlling air exiting the buoy by closing your fingers around the call in a cup shape, taking care not to touch the hole.
Three Tones

Plain Note: The plain note is represented on a chart by a steady line. It is played by blowing steadily into the call.

Warble: The warble is represented on the chart by a wavy line. You make the warble tone by blowing a series of jerks unsteadily, making a similar sound to a canary. However there is a debate as some people believe it should be played by rapidly moving the hand from the high to low position.

Trill: The trill is shown on the chart with a staccato, or jagged line. It is produced by vibrating the tongue, or rolling the letter R. Canadians should know it from "R-R-R-R-R-ROll Up The Rim To Win"

Note: In addition to the notes and tones, some pipes will also require a sharp finish, which is created by suddenly blocking the gun with the tongue to end the pipe sharply.
Pipes

The pipes are reason for using a call. These are comparable to songs you would play on an instrument, but are simpler and much shorter. These are used for passing commands and orders.

The still is a call used to pipe all hands to attenion as a mark of respect, or to order silence on occassions such as rounds, colors, sunset, or to stop all work to prevent an accident.

The still is played by blowing a high note for 8 seconds.

The carry on is usually played after the reason for the still is completed. It signals all hands they can carry on with their duties or new orders.

The carry on consists of a high note for 1 second, then a low note for one second.

The general call starts off low then makes a quick transition to a high note which is held for 3 seconds, then drops to the low note where it has a sharp finish.

1. When the Commanding Officer, or a foreign naval officer (in uniform), or a commodre and above (with or without uniform), or a member of the royal family:

a) Comes alongside in a boat.
b) Is comming on board
c) Is going ashore
2. When a corpse or body is taken aboard or ashore.

3. When a body is commited to the sea in a funeral at sea.

The side starts with a low note held for 4 seconds, a high note for 4 seconds, and back to the low note for 4 seconds. This 12 second pipe requires you to take a deep breath before playing, otherwise you will cut the call short.