In coastal navigation, so often within range of a cellular network, you can download GRIB files, weather maps, or simply communicate with friends. But what if your smartphone or tablet is already connected to a multiplexer via Wi-Fi, or an NMEA gateway, without cutting off the data that powers our favorite navigation app ?
This is the tip of the summer…
[Update 25/09/2020] The trick in question depends on the iOS version used. Details in the article.