Hi Dave.
I finally got around to downloading (purchasing) your
OpenCPN for Android.
I transferred all my .kap maps to my extDrv as well as a special directory for .gpx files. Finding my way around and it all seems to function the way it should. I have found that it gets stuck now and again and I have to re-boot.
I have it on both my Galaxy tablet,AND my quicker Galaxy S5.
Great job,,, look forward to see developments..
Tore