Originally Posted by gjorgensen
The standard MM3 charts are Navionics core.
I'm not sure what you mean by that.
When you purchase
a MapMedia region, you select raster, Navionics, C-Map, S-57, or NOAA vector. The purchased region then has that one particular type of chart from the one producer. You can purchase
both Navionics and C-Map regions and can switch displays with one button.
has suggested to us that given the choice, C-Map data is usually better. For the regions I have of the Caribbean
, there's no question about it.