Navigation and Safety
Great circle navigation charts
http://www.stormsurf.com/gc/mht/globe.html
Navigation Rules - U.S.C.G. online rules
http://www.navcen.uscg.gov/mwv/navrules/rotr_online.htm
Boating Safety - U.S.C.G. resources
http://www.uscgboating.org/
Aids to Navigation Illustrations
Lateral System
http://www.uscgboating.org/safety/aton/lateral.htm
Non-lateral Aids
http://www.uscgboating.org/safety/aton/non_lateral.htm
Uniform State Waterways Marking System
http://www.uscgboating.org/safety/aton/state_marking_system.htm
Western Rivers
http://www.uscgboating.org/safety/aton/rivers_marking_system.htm
Road signs example
http://www.uscgboating.org/safety/aton/buoyage.htm
Chart example
http://www.uscgboating.org/safety/aton/chart.htm
http://www.uscgboating.org/safety/aton/lateral.htm
Non-lateral Aids
http://www.uscgboating.org/safety/aton/non_lateral.htm
Uniform State Waterways Marking System
http://www.uscgboating.org/safety/aton/state_marking_system.htm
Western Rivers
http://www.uscgboating.org/safety/aton/rivers_marking_system.htm
Road signs example
http://www.uscgboating.org/safety/aton/buoyage.htm
Chart example
http://www.uscgboating.org/safety/aton/chart.htm
Nautical Almanac pages for user-specified date
http://www.tecepe.com.br/scripts/AlmanacPagesISAPI.isa
Star Chart for user-specified location and date
http://www.tecepe.com.br/cgi-win/cgiasvis.exe
Bowditch's The American Practical Navigator - .pdf download
http://www.irbs.com/bowditch/
