Re: useing a tablet as a chart plotter.
Nice report, Bruce. Thanks! I share your opinion about poor screen visibility for mobile devices in sunlight.
Some nav software has the function of displaying in " night" mode--ie, the screen image is rendered as though through a green or red scrim. I have a version of "The Cap'n" software on an old PC laptop with that functionality and it worked well, just as good as the night view function on a dedicated marine plotter's screen. I don't know if all nav software has this, of course, but was wondering if yours did and whether you had used it and still felt the screen too bright?
Only gripe was the brightness of the screen at night, so we ran with the screen off for periods of time and switched it on to check progress and do course corrections.
There are two kinds of boaters: those who have run aground, and those who lie about it.