Channel 16
MCA small-craft guidance uses Channel 16 for the voice Mayday after a DSC distress alert, for an urgency announcement before moving to a nominated working channel, and for an initial voic...
Read the full lesson: Channel 16Loading your revision module…
Marine Radio revision module 4 of 10
Channel 16, Channel 70, marina/port channels, intership working channels, and when to move off the calling channel.
9 guided lessons · 19 practice questions · 19 flashcards
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MCA small-craft guidance uses Channel 16 for the voice Mayday after a DSC distress alert, for an urgency announcement before moving to a nominated working channel, and for an initial voic...
Read the full lesson: Channel 16A DSC set uses Channel 70 to send and receive digital calls identified by MMSI. The digital call can carry a priority and, for some call types, propose a channel for the radiotelephony ex...
Read the full lesson: Channel 70Inter-ship, coast-station, port, traffic-service and marina communications do not all share one universal working channel. The station, DSC acknowledgement, current almanac, harbour guide...
Start with the situation. Grave and imminent danger requiring immediate assistance is distress; concern for the safety of a person or vessel is urgency; navigational or meteorological war...
Read the full lesson: Calling, Distress, and DSC ChannelsIf the other vessel's MMSI is known, MCA guidance gives an Individual DSC routine call that indicates the proposed inter-ship channel. After acknowledgement, the conversation starts on th...
Read the full lesson: Inter-ship and Working ChannelsOfcom describes UK marina coastal-station radio as supporting pleasure-craft movement, berthing and race control. It identifies M and M2 as UK simplex marina channels, while international...
Read the full lesson: Marina, Port, and Local ChannelsMCA guidance says to listen before transmitting, be brief, identify yourself, use clear procedure words, stick to ship's business, wait before retransmitting and try low power first excep...
Read the full lesson: Channel DisciplineSimplex voice operation places the participating stations on one shared frequency. Push-to-talk still means one station speaks while the others listen. This is why concise transmissions,...
Read the full lesson: Simplex, Duplex, and Channel PurposeChannel 13 is allocated in GMDSS for bridge-to-bridge communications. The MCA small-craft sequence is specific: the other ship's MMSI is unknown, the initial low-power voice call on Chann...
Read the full lesson: Channel 13 Is a Navigation-Safety Fallback, Not a Second Channel 16Add the complete practice layer
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