NOAA BSB/RNC Charts

[NoOp]

Anyone here have any experience/advise on how to view/use NOAA
BSB/RNC/KAP Raster Navigational Charts w/Ubuntu/linux?

For example, I can view a chart in swf here:
http://www.charts.noaa.gov/OnLineViewer/18649.shtml

I can download an RNC chart:
http://www.nauticalcharts.noaa.gov/staff/charts.htm#Catalog
http://www.charts.noaa.gov/RNCs/Agreement.shtml?18649
[Click OK  to download 18649.zip ]
and I can extract the zip w/rnc/kap files.

Web searching turns up this:
http://smittypaddler.com/chartview/tutorial/noaa.htm
[Chartview - Downloading and using NOAA Raster Navigational Charts (RNCs)]
which I've not ventured into just yet,
and
http://libbsb.sourceforge.net/

Before I try the above two, does anyone here have experience with either?

Or, anyone know how I can just extract the chart in
http://www.charts.noaa.gov/OnLineViewer/18649.shtml
for printing?