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November 16, 2019 01:40 am

Ghost Ships, Crop Circles, and Soft Gold: A GPS Mystery in Shanghai

An anonymous reader shares a report: One night last summer, a ship called the MV Manukai arrived at the port of Shanghai. It would be the American container ship's last stop in China before making its long homeward journey to Long Beach, California. As the crew carefully maneuvered the 700-foot ship through the world's busiest port, its captain watched his navigation screens closely. They showed another ship steaming up the same channel at about seven knots (eight miles per hour). Suddenly, it disappeared from the display. Then it reappeared, then disappeared again. Eventually, mystified, the captain picked up his binoculars and scanned the dockside. The other ship had been stationary at the dock the entire time. When it came time for the Manukai to head for its own berth, the bridge began echoing to multiple alarms. Both of the ship's GPS units had lost their signals, and its transponder had failed. Even a last-ditch emergency distress system could not get a fix. Now, new research shows the Manukai and thousands of other vessels in Shanghai are falling victim to a mysterious new weapon that can spoof GPS systems. Who could be behind it? The Chinese state? Or could it be daring and sophisticated sand thieves? Read MIT Technology Review story to find out more.

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