This book explains how to use a VHF radio on your boat. It covers licensing the boat and the operator, then takes you through each type of call, and its æstandard procedureÆ. You can also call using Digital Selective Calling (DSC) and the book has photo sequences of how to do this. Each procedure is illustrated using the story of the yacht Sierra making various passages and communicating with other vessels, the Coastguard and other VHF operators such as yacht clubs. Probably the most important section is sending a Mayday - the nautical call for help. This 3rd edition contains all relevant updates including the latest technology developments, and VHF protocols.