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1 Introduction
1.1 Global E-mail and GPS Tracking
The KVH eTrac system provides global e-mail and vessel tracking capabilities via the
Inmarsat-C service and the Global Positioning System (GPS). It is brought to you in
cooperation with Thrane & Thrane, the world’s leading manufacturer of Inmarsat
satellite communications systems.
1.1.1 Inmarsat-C
The Inmarsat-C satellite network and mini-C protocol are a store-and-forward
mailing system that enables you to send and receive data to and from mobile
terminals worldwide via the Inmarsat-C system. Four geostationary satellites provide
worldwide coverage. Satellite data link coverage is excellent between 70º North and
70º South. Because the polar regions cannot be seen from geostationary satellites,
these regions are not covered. Figure 1-1 shows the coverage area offered by the
Inmarsat-C service.
Figure 1-1: Inmarsat-C Coverage Areas
Introduction
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