Abstract
Two subsequent World Radiocommunication Conferences, held in 2015 and
2019, have concluded the frequency allocation in VHF bands for the
two-way maritime VHF Data Exchange System (VDES) via terrestrial and
satellite radio frequency links respectively. The modernization and
digital evolution of maritime communications was initiated in 1990’s by
adopting Automatic Identification Systems (AIS) for ship to shore, ship
to ship and shore to ship communications for a variety of applications,
targeting safety at sea. The frequency allocation for VDES has been a
significant step forward towards achieving the same goal by facilitating
solutions for enhanced navigation, broadcasting essential information
and many other emerging applications.