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Satnav loss might shut down sea

Annual maritime traffic around the British Isles – image courtesy of ©

Satellite navigation is precise, reliable and available continuously around the globe, but overreliance on it presents a clear and present danger to the smooth passage of maritime trade, concludes a major ESA-backed study.

“The aim of our Maritime Resilience and Integrity in Navigation, MarRINav, project, was to peer 10 years ahead to see if the needs of mariners for accurate, resilient PNT, would continue to be fulfilled.” according to Jonathan Turner of ‘blue economy’ specialist NLA International, which led the study for ESA.

What the MarRINav team found was that the very success of satellite navigation, in terms of its precision, reliability and always-on availability, is a cause for concern.