Module 6 - Distress & Mayday

Received Mayday, Mayday Relay, And Distress Silence

If you receive a DSC distress alert or voice Mayday, stop transmissions that could interfere and keep a listening watch on Channel 16. Coastguard or a coast station normally coordinates the response.

If no acknowledgement is heard after a short interval and you are able to assist, a vessel may acknowledge by voice with RECEIVED MAYDAY and state what help it can give. If the distress message needs passing to a coast station, use Mayday Relay procedure.

Key points

  • Cease interfering transmissions.
  • Listen on Channel 16.
  • Use RECEIVED MAYDAY only when appropriate.
  • Use Mayday Relay to pass a distress message when needed.
  • Seelonce Mayday controls distress silence; Seelonce Feenee ends it.

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