USCG Navigation Center
United States Coast Guard organization founded
to enhance the safety, security, and efficiency of
United States waterways and civil GPS users.
USCG Boating Safety Resource Center
Boating safety Web site published by the United States Coast Guard.
Directories of Marine Navigation Web Sites
BOTW Directory of Navigation Science Web Sites
BOTW Directory of Navigation Products and Services
Open Directory of Water Navigation Web Sites
Open Directory of Navigation History Web Sites
Yahoo Directory of Navigation Sciences Web Sites
Yahoo Directory of Navigation Products and Services