- U.S. Coast Pilot
These books provided detailed information to be used in conjunction with NOAA marine charts. They are updated regularly (almost weekly) and should therefor be downloaded close to the time of use.
- The NOAA interactive chart catalog
The gold standard in marine charts. Like Coast Pilot, these are updated regularly and should be accessed close to time of use. I've had good print-on-demand service from Landfall Navigation, though their web site is a bit clunky. Note that charts can be ordered in a variety of materials; the default is water resistant paper, not waterproof paper ($10 more per chart).
- The National Geospatial-Intelligence Agency maintains many useful marine publications. Note: The NGA seems to have let their web certificates lapse; you will get scary warnings from your browser when you access their publications.
- List of Lights - a compilation of every navigation aid in the entire world.
- Atlas of Pilot Charts - pilot charts list the prevailing winds, based on historical observations. There is one chart per month for each area covered.
- The U.S. Coast Guard Navigation Center is chock full of goodies.