🔍 Key Concepts

• Aids to Navigation (ATON) system and how regulatory/information markers are shown on charts and in the Navigation Rules • Difference between regulatory/information buoys and lateral (red/green) channel buoys • Standard color of lights used for special purpose or information marks

💭 Think About

• Think about what information markers are used for (e.g., instructions, warnings, directions) and what light color would best stand out without being confused with channel markers • Recall the common light colors for port and starboard channel markers; which choices here would likely be reserved for those, not for information markers? • Consider which color is typically associated with special purpose buoys (like caution, dredging, or information) rather than marking the edge of a channel

✅ Before You Answer

• Verify in your study materials which light color is assigned to information / regulatory markers, not channel markers • Eliminate any colors you know are normally used for port (left) and starboard (right) lateral marks in the U.S. Aids to Navigation system • Confirm that the color you choose is associated with special purpose or informational buoys, such as those with orange symbols or messages