C-Map NT Upgrade to 4D

[misterhino]

My chart plotter on my PC currently uses C-Map NT maps (not a card), however, I want to upgrade to C-map 4D.

Does anyone know of a method of upgrading, other than simply paying the full price and starting again?

I know there is a way of upgrading the cards but this is the downloadable charts

 

[Schuss39]

Try contacting the C-Map office and explain what you want to do. They were very helpful and gave me a discount when I upgraded cards last year to 4D.