The only other display choice you have is toggling the "Community Layer" on and off. Terrain gives a topographical look with greens, browns and yellows. The "No overlay" choice displays land in a raster-like yellow, while Google and Bing both use highly detailed aerial photography. You have four choices for land display: "No overlay", "Google", "Bing", or "Terrain". Water and hydrographic features display in bright white and several shades of blue, complete with depth contour lines. If you're someone who prefers the look of raster charts (basically a full-color digital image of NOAA's paper charts), then you'll immediately notice the different look of Navionics' custom chart renderings. The first thing you'll notice about Navionics is the beautiful hi-definition charts. Now on to the review of Navionics for iOS. The bottom line is that if your cockpit isn't dry and shaded, you may be better off keeping the iPad down below at the nav station. Having said that, you can purchase all-weather protection for your iPad such as dry bags and there are also temporary mounts available. However, the screen can be difficult to view in direct sunlight and obviously the device isn't suitable for a damp, wet environment. The iPad's size, touchscreen and brilliant display are excellent for looking at charts. Let's get some iPad basics out the way first.
More recently, I've put the Garmin in a back-up role and begun using the Navionics HD app for iOS on my iPad 2, along with a suite of other great navigation and sailing apps.
#Navionics web app software
I have traditionally used a Garmin GPSMap 76cs Plus handheld plotting GPS and more recently added a netbook computer running the free OpenCPN chartplotter software tethered to the Garmin.
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