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Sound-signalling-device

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.

Whistle

Meeting situations sound signals

  • One short blast - I intend to change course to starboard.
  • Two short blasts - I intend to change course to port.
  • Three short blasts - I am operating astern propulsion (backing up).
  • Five or more short and rapid blasts - Danger or doubt signal (I don’t understand your intent).

Sound Signalling Devices

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