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Sound Signalling Device - Requirements - Short Blasts - Altering course

Unlike the sound signalling device, the sound signalling appliance is an integral part of the boat, is affixed to it and is in good working order.  A sound signalling device can be a pealess safety whistle, a compressed gas horn, an electric horn, a gong or a bell. Whistles with a pea inside are not regulatory as they will not work with water in them.


Sound Signalling Devices

Meeting situations sound signals

One short blast - I intend to change course to starboard.

One (1) short blast turn right

Two short blasts - I intend to change course to port.

Two (2) short blasts turn left

Three short blasts - I am operating astern propulsion (backing up).

Tree (3) short blasts backing up

Five or more short and rapid blasts - Danger or doubt signal (I don’t understand your intent).

5 short blasts what is your intent

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