Boaters Guide VHF & GMDSS. Nearly six million U.S. and Canadian recreational sail- and powerboats carry VHF radios. Endorsed by the U.S. Coast Guard and written by a navigation VHF-DSC radio trainer, this user friendly guide gets boaters quickly up to speed on both analog and digital VHF radiotelephone usage. Its straightforward, non technical coverage,
“Geek-speak” boxed definitions, quick reference chart, and more make it easy for readers to quickly master and get the most out of their radios.