Hello all! I am writing, because I have a small problem. I have Navionics Full HD App on my tablet. But also I have a Lowrance sonda on my boat. I am wondering how Can I transfer from my Navionics App or download from somewhere maps for Lowrance for sonda (by sd card)? I know I can use bluetooth and share my tablet screen into Lowrance but I want to get from somewhere map files and put them on SD card and insert into Lowrance. Is it possible to take maps from Navionics app? Ive already download half Europe. I search in folders for .at5 map files but I cant find even one. Does Navionics have other extensions of map files? Thanks all for help!