You are sailing south on the Intracoastal...

🔍 Key Concepts

• Intracoastal Waterway (ICW) markings and how they are shown on standard lateral buoys • Meaning of yellow triangles vs yellow squares on ICW aids that are also part of the regular red/green buoyage system • Difference between lateral buoys and information/regulatory buoys in the U.S. Aids to Navigation System

💭 Think About

• Ask yourself: on a normal red nun buoy, what does the red color and shape already tell you about the channel? Then, what extra information does a yellow triangle add specifically for ICW traffic? • Think about whether geometric symbols (triangles/squares) ever replace letters and numbers, or if they are added to existing aids for an additional purpose. • Consider what type of buoys are used to mark information or regulations (speed, no wake, exclusions). Do they look like nuns/cans, or do they have a different standard shape and color pattern?

✅ Before You Answer

• Verify what a yellow triangle means for vessels following the ICW southbound vs northbound. • Confirm what shapes and colors are used for regulatory/information buoys (are they red? nun-shaped? do they carry letters/numbers the same way?). • Check whether yellow geometric symbols indicate a coincidence of two navigation systems (ICW plus standard lateral system) rather than special channel bends or turns.

You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow triangle painted on it. Which statement is TRUE?

The ICW and another waterway coincide in this geographical area.

Geometric symbols such as squares and triangles replace letters and numbers on ICW aids to navigation.

This is an information or regulatory buoy that also has lateral significance.

The yellow triangle identifies a sharp turn (over 60°) in the channel.

🔍 Key Concepts

💭 Think About

✅ Before You Answer