
Is it time to get an iPhone? Probably. And if you already have a 2nd generation iPhone (with the GPS chipset), you need to get iNavX right away, if only to use as a backup to your main nav setup.
iNavX™ brings official NOAA RNC raster United States waters marine charts to your iPhone or iPod Touch.
With iNavX™ you can use the iPhone’s built in location services (i.e. GPS, cell tower, wifi) to plot your position in real-time on the scrolling marine chart.
Using the iPhone’s or iPod Touch’s WiFi connection, iNavX™ can act as a repeater for popular marine navigation software that supports NMEA data over TCP/IP such as MacENC or other MS Windows marine navigation applications (i.e. Coastal Explorer, Expedition, GpsGate). This includes GPS, AIS receivers & transponders, and Instruments (Depth, Speed, Wind, etc.)
In addition to real-time chart plotting, iNavX™ supports waypoints, track log, measuring bearing/distance and tides/currents.
And all for $50! Versus $500 to $1000 for a mapping handheld GPS with charts. WARNING: 1st gen iPods and iTouch do not have GPS, they use a hokey cell-tower triangulation method for position, which is probably not worth it.

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