Watchkeeper: A matter of resilience

Today, as the shipping industry contemplates its move into the age of e-navigation, it is worth taking a moment to consider our huge and growing dependence on the Global Positioning System and its galaxy of satellites circling the earth. By 2015 it is expected that there will be some 140 navigational satellites up there, sending signals to the US, Russian, Chinese, Japanese and European systems. This, it has been suggested, will provide a greater degree of resilience to the users of GPS, should one system be switched off or degraded by some untoward event.
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Source: Bimco