Why Can’t I Rely on GPS Alone on Extended Cruising Trips?

Why Can’t I Rely on GPS Alone on Extended Cruising Trips? Alternate title –  GPS; Siren Song to Unprepared Navigators By Capt. Joan Gilmore   Have you heard the story of the Swedish couple cruising the Mediterranean, who mistakenly typed “Capra” into their GPS, when they actually intended to go to the island of Capri?[…]