1.10 Calling
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Assembly - IMO Resolution A.954(23) – Proper use of VHF Channels at Sea – (Adopted on 5 December 2003) - Annex - Guidelines on the use of VHF at Sea - 1 VHF Communication Technique - 1.10 Calling

1.10 Calling

  1.10.1 In accordance with the Radio Regulations channel 16 may only be used for distress, urgency and very brief safety communications and for calling to establish other communications which should then be conducted on a suitable working channel.

  1.10.2 Whenever possible, a working frequency should be used for calling.

If a working frequency is not available, VHF channel 16 may be used for calling, provided it is not occupied by a distress and urgency call/message.

  1.10.3 In case of a difficulty in establishing contact with a ship or a coast station, allow adequate time before repeating the call. Do not occupy the channel unnecessarily and try another channel.


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