Color Blind Map Test
"About five percent of people have some sort of color vision deficiency, and ten percent of all males are at least partially color blind. Most color blindness results in a person's inability to distinguish between some shades and red and green. If you're a GIS person, chances are at some point you have made a map that someone had trouble reading."
Page 6 - http://www.vcgi.org/commres/publications/newsl_may2003.pdf
View a Sample from the Big Bend Saltwater Paddling Guide
Picking map colors
ColorBrewer is an online tool designed to help people select good color schemes for maps and other graphics. It is free to use with citation.
NPS Map Symbols
Cartographic Design Principals
This was originally posted to the British Society of Cartographer's listserv, 26 November 1999.
USGS Color Chart
NOAA Nautical Chart symbology
NOAA - Navigational Charts
(ENCs) Data into GIS/CAD format
Raster Nautical Charts (RNCs)
View RNCs on-line using viewer
MapTech's MapServer - Free Online Viewer (with ads)
Florida Resources & Environmental Analysis Center (FREAC)
at Florida State University