Admiralty Digital Radio Signals Vol 6 7.5

Admiralty Digital Radio Signals Volume 6 provides maritime radio communications information for pilot services, vessel traffic services and port operations worldwide. More than 3000 service locations are updated quickly and efficiently via email or CD every week. Now accepted in place of the paper version by a growing number of flag states.
Volume 6 of the Admiralty List of Radio Signals is the first to be converted into a full-function software tool, eliminating the need for time-consuming manual updates