If you use MaxSea TimeZero you can install Jeppesen (c-map), Navionics and raster maps of the same area and switch between them with one mouseclick.
Best place for info is
Mick's CornerCode:Please Login or Register to see the links
You have to register and to get access to the TZ map unlock codes you have to make a modest donation.
Last edited by Roger; 21st July 2013 at 05:42 PM. Reason: coded link according to Forum rules