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Big change in Navionics Boating Apps. Dec. 19, Nanionics combined the Boating ($9.95 purchase $4.95 renew) and Boating HD ($54.95 & 14.95 respective) app into one app now called Boating Marine & Lakes HD. Now one annual subscription price of $14.99. When you open your Boating app ($9.95 / $4.95) app you will be directed to install Boating Marine & Lakes HD and your data will automatic transfer IF YOUR LOGGED INTO NAVIONICS. It's good until your subscription ends, than you buy another year at $14.95. Garmin added ActiveCaptain to the app which overlays "points of intrest" and ability to transfer map, markers etc. data to your Garmin comparable electronics. Very limited POI's on inland lakes found a couple on Mille Lacs & Superior. You ca add some if you wish.
I'm planning a fishing trip to Vermilion this summer. It's been many years since I've been up there. I have the Navionics + app on my mobile devices and have been marking spots that look interesting. One of the spots I marked was a nice hump surrounded by deep water. There was a big difference between the Navionics Nautical Chart view and the Sonar Chart view. It literally disappeared on the Nautical view but showed on the Sonar View. I then ran the map "update all" and from the Sonar view now it was gone from both views with my marker out in the middle of nowhere. So I started to look around for other areas that showed a big difference between the two views. (Many areas however do look very similar on both views) I've attached a couple of screen grabs of a spot that has a huge difference. This is on the north side of Pine Island near Matson Island. The first is the Nautical Chart view, The second is the Sonar Chart View. I always thought that the Sonar Chart would be the most accurate, they look more detailed, plus according to Navionics the Sonar Chart is "constantly being updated by Sonar Logs contributed by million of boaters." I'm not really sure if I can trust either? To anyone who knows this part of the lake, are there really the holes and humps in this area? One view shows a 52' hole where the other has 15 FOW.