On Fri, 23 Jun 2006 09:46:18 GMT, ray lunder
wrote:

Is there a specific file extension you look for in downloaded files
for raster charts? Where do you download them from. Thanks again.

NOAA refers to them as RNC charts (as opposed to ENCs). You can get
them he

http://nauticalcharts.noaa.gov/mcd/Raster/download.htm

My recollection is that they come down as ".zip" files that have to be
unpacked and reorganized before you can use them. Eventually they end
up as ".bsb" and ".kap" file extensions. There are folks on the web
selling DVDs that have everything already unpacked. Here's one that I
have bookmarked but there are others:

http://www.chartsdvd.com/