If you are using the latest version of MaxSea (12.5), it no longer
supports C-Map, if you stay with 11.something you should be okay but
you will not have the weather routing module. JP

This can't be true??? I'm using ver.12.0.1. cr06. Manual tells that the
MaxSea will automatically recognize C-Map card. Manual came with this
software. On MaxSea web site there is information about compatibility with
C-Map charts and NavNet. They claim that software is fully compatibile, not
mentioning versions of software.