I have the iPhone version of
Navionics on both my iPad and my iPhone.
I have the component video
cables that I use all the time to watch videos, netflix etc. on a regular tv from both the iPad and iPhone.
I just tried to display the
navionics app on the tv and it doesn't
work. I have looked at the settings in the Navionics app and there doesn't appear to be any setting to turn external video on.
My understanding is the
software developer has to write the code to use the external video (video out) features of the iOS. Unless the iPad version of the app has video or someone else has cracked the code, I don't think the iPhone/iPad Navionics app will drive an external
monitor.
The iPad is a good solution for the
boat but I find myself using the iPhone almost all the time. It's nice to have it "in hand" when I am on on the
boat.