National Oceanic & Atmospheric Administration
http://www.arh.noaa.gov/
http://www.arh.noaa.gov/
Alaska Ocean Observing System
http://www.aoos.org
http://www.aoos.org
NOAA Alaska on-line chart viewer
NOAA Tides and Currents
http://tidesandcurrents.noaa.gov/
http://tidesandcurrents.noaa.gov/