In the last two years New Marine GPS use a new technology of CMAP.

What is the difference between CMAP and CMAP NT or BLUECHART cartography?

Is there any standard for these CMAP NT or BLUECHART cartography?

If yes, what are they? where can I read about it?

What do the words Local, Standard, Wide or SuperWide mean with CMAP NT or
BLUE CHART covers in Australia?

How many square miles/km do they each cover Local, Standard, Wide or
SuperWide?

Guy


--
To EMAIL me: remove # and NOSPAM in my email address