- Navigation Information Connection - Links and photos associated with the U.S. Inland Waterway System. Includes real time location and queue lists of towboats and barges operating on U.S. inland waterways.
- Sailing Issues: Navigation Course - Contains nine chapters covering piloting, plotting, navigation aids, and tides. Related equations and tables.
- The Complete On-Board Celestial Navigator - About a reference book for navigation at sea. Includes table of contents and purchasing information.
