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GMDSS for Navigators by Peter Smith, John Seaton

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Practical And Theoretical Knowledge Of General Communication Procedures

 

SELECTION OF APPROPRIATE COMMUNICATION METHODS IN DIFFERENT SITUATIONS

Operators should know which radiocommunications system will be the most suitable for any given ship's position. Factors to be considered when deciding which equipment to use may include time of day or night, radio wave propagation and the Ionosphere, facilities and services available at coast stations, price and ship's position.

TRAFFIC LISTS

Broadcast by coast radio stations on Radiotelephony (and, from some stations Radiotelex) frequencies, are lists consisting of ship's names, radio callsigns or MMSIs for which the coast station has traffic ie. radiotelephone calls, radiotelexes, radiotelegrams, etc. ...

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