Navigation Rules and Aids
7-9
Lighthouses
Markers
Seven (7) types of markers are used to assist the boat operator:
• Range
• Special
• Regulatory
• Safe Water
• Lateral
• Preferred Channel
• Isolated Danger
Range Markers
Range markers have many color schemes, may have numbers or letters and may
be lighted or unlighted. They are placed in pairs within close distance of each
other. They are commonly used in channels to guide boats safely through the
center or safe line of navigation. Keep range markers visually in line with each
other while navigating the waterway to avoid obstacles or other invisible dangers.
Special Markers
Special markers are yellow and come in various styles and shapes. Lighted and
unlighted daymarks and buoys vary in function. Many are used to display
information and navigational direction rules. The most common special markers
are those used in intercoastal waterways. Contact your state and local authorities
for more information on special markers used in your boating area.
Lighthouses can be found at harbor entrances,
prominent headlands, isolated danger areas and
along the coasts. These striped or patterned
structures have unique flashing signals, which help
boaters identify them.
Supreme_2018.book Page 9 Wednesday, January 31, 2018 9:30 AM
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