U.S. AIDS TO NAVIGATION (ATON) SYSTEM
Source: US_ATON_Guide.pdf (uscg.gov)
What You Need to Know About the Markers on the Water
Source: 486.PDF (uscgboating.org)
Title 33 - Navigation and Navigable Waters
Source: CFR-2012-title33-vol1-chapI.pdf (govinfo.gov)
DECK WATCH OFFICER EXAM PREP