Navionics and other apps for a tablet

[bigeasy1]

Although I'm a fresh water fisherman(Great lakes,lake Ontario),I could use some help from any tech gurus,or any of you who use the Navionics app on a tablet.
I just picked up a Samsung Galaxy Note 10.1 tablet quad core 16 GB mem.,and thought it might be fun to give it a try on the boat.(It would be in a dry place).

I have a chart plotter (C-Map)already in the boat,but was thinking that in addition to being able to look at temp charts,and other stuff on the boat,it would be nice to also have a navionics capability.
Anything special I need to look for? is it a realistic way to map on the tablet? Also any other valuable apps that you can recommend?
I have Radar on the boat,but what about a good lake weather apps.

Any info is appreciated,
(and in laymans terms please as I'm not incrediby computer savy).I'm getting closer and closer to becoming a fossil.