FF Humminbird 385ci kayak combo?

Do the Navionics chips give one more marine data than the NOAA charts?

The Navionics chart seems to have the same data as NOAA. One thing Navionics  adds is that you can call up tides and currents data by clicking on the station you want - they also let you download the same charts for use on your computer, which is nice for planning where you want to go.

My neighbor told me that he copied the SD card data from someone else's card and it worked fine..but I've never tried that before - and you never heard that from me...