I've used my iPad for navigation on the Great Lakes using iNavx on an iPad without a SIM card and thus no cell service. Not sure whether Navionics requires a cell/internet connection to update chart information but iNax loads the regional maps so can operate in a unconnected manner.
Although I have location, AIS and boat instruments feeding the navigation application via a ShipModul Wifi multiplexer the iPads GPS works well enough by itself. ed Prime Interest 1982 C&C Landfall 38 Toronto, Canada > On Jan 16, 2014, at 8:40 PM, Brad Crawford <bcrawf7...@comcast.net> wrote: > > Andrew, > I have used my iPad most of the time as a chartplotter also, using Navionics, > we also carry back up paper charts. So far our long distance trips have been > to the San Juan islands and Gulf Islands of British Columbia. Just out of > curiosity, how far off shore have you used your iPad as a navigational tool, > and have you always had cell coverage. > > Brad > C&C 36 > Dora Pearl > Seattle > > Sent from my iPad > >> On Jan 16, 2014, at 6:19 AM, Andrew Burton <a.burton.sai...@gmail.com> wrote: >> >> Since getting my iPad a couple of years ago, I haven't pulled out a paper >> chart once. As you say, It's a great tool. >> I have to admit that my sextant hasn't accompanied me on a passage since >> about 2007 or 50,000 miles ago. I carry spare GPSs, but in the back of my >> mind always is the possibility that the whole system may go down and then >> what do I do? Well, I'm pretty confident of my ability to keep a good DR and >> EP, and in my ability to stay out of trouble when approaching a shoreline if >> I'm not confident of my position (which is pretty much always). >> >> The bottom line is, I think that learning piloting--coastal navigation, >> etc--is a higher priority than learning to use a sextant. >> >> One little trick when approaching a shoreline without a position fix for >> some time is to steer to one side of where you want to go. That way when you >> see land, you know which way to turn to make your port. So if I want to get >> to Charleston, I may aim for Hilton Head and when I see land, or it starts >> getting shallow, I know to turn north in order to get to Charleston. If I >> aim straight for where I want to go, and miss, I'm not sure which direction >> to turn, the land being pretty featureless from offshore. This tip is >> courtesy of Chichester from when he was flying his Gypsy Moth biplane. >> >> Andy >> C&C 40 >> Peregrine >> -- >> Andrew Burton >> 61 W Narragansett Ave >> Newport, RI >> USA 02840 >> http://sites.google.com/site/andrewburtonyachtservices/ >> phone +401 965 5260 >> _______________________________________________ >> This List is provided by the C&C Photo Album >> http://www.cncphotoalbum.com >> CnC-List@cnc-list.com > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com
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