On navigation charts, what does the circle symbol near a buoy typically indicate?

On navigation charts, what does the circle symbol near a buoy typically indicate?

• A. Marks the exact height of the buoy above water
• B. Indicates the buoy's color
• C. Approximates the position of the buoy mooring
• D. Represents the depth of water near the buoy

Answer: (C)

The circle near a buoy on navigation charts marks the approximate position of the buoy’s mooring. Buoys can drift or swing with currents and tides, so the exact buoy location isn’t fixed to a single point. The circle shows where the mooring (anchor and line) is located, giving you a reliable area to expect the buoy’s anchor, which helps with safe navigation. It’s not about the buoy’s height above water, its color, or the depth of water nearby—those details are shown by other chart features.

The circle near a buoy on navigation charts marks the approximate position of the buoy’s mooring. Buoys can drift or swing with currents and tides, so the exact buoy location isn’t fixed to a single point. The circle shows where the mooring (anchor and line) is located, giving you a reliable area to expect the buoy’s anchor, which helps with safe navigation. It’s not about the buoy’s height above water, its color, or the depth of water nearby—those details are shown by other chart features.