DIGITAL SELECTIVE CALLING

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More info on GMDSS 

Australian MMSI application form

Australian MMSI list

Australian marine radio operator qualification info

Australian marine radio licensing info

VHF DSC computer simulator 

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A marine safety radio system for all mariners

The GMDSS has automated many marine radio functions and processes, particularly those related to distress and safety.

The GMDSS is an amalgam of a number of individual radio systems.  Whilst satellite-based systems do play a part in the GMDSS, ‘normal’ terrestrial radio continues as the primary system for ship-ship and ship-shore communications.

The GMDSS has automated marine radio distress alerting by the use of a technology known as Digital Selective Calling (DSC).
 
This web site has been established to provide a single point resource on DSC, with a particular focus on VHF DSC and its use by recreational boaters.

We explain how DSC works, what you can use it for, and why you should seriously consider fitting it to your boat and/or limited coast station.

What does VHF DSC do?

Copyright © 1999 - 2008 Densham and Associates Pty Ltd. All rights reserved. Revised Jan. 23, 2008.  IMO and ITU documents remain the property of the International Maritime Organisation and International Telecommunications Union.  Equipment depicted in these pages is for illustrative purposes only.  The inclusion thereof is not intended as an endorsement or advertisement.  All information contained herein was accurate at the time of publication and is subject to change without prior notice. 
Densham and Associates are not responsible for content in any of the external links listed on this site (apart from our own).