e-NAV Area Definitions
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GMDSS Sea Area (approx)
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Broadband phone line or cable. (When ship at berth)
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Wi-Fi®
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WiMax™
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Mobile phone technology
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AIS
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VDE
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Digital VHF voice and data
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Data by modulated RADAR
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Geostationary Satellite
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Commercial MEO/LEO satellite comms
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MF & HF (including Navtex / MSI)
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DGPS beacon data broadcast service
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Current MF & HF NDBP
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HF digital data service
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MF/HF digital data services for MSI (incl NAVDAT)
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