Which shapes are commonly used to denote buoys on navigation charts?

Which shapes are commonly used to denote buoys on navigation charts?

• A. Diamond and Small Circle
• B. Circle and Triangle
• C. Square and Circle
• D. Diamond and Square

Answer: (A)

On navigation charts, aids to navigation are shown with simple geometric symbols so mariners can recognize them at a glance. Buoys are commonly depicted using a diamond and a small circle. The circle serves as a generic buoy/beacon marker, while the diamond is a distinct shape that appears in standard chart legends to represent buoyage features. This pairing matches what you’ll typically see in chart symbology, which is why it’s the best choice. The other shape combinations don’t align with the standard buoy symbols used on charts.

On navigation charts, aids to navigation are shown with simple geometric symbols so mariners can recognize them at a glance. Buoys are commonly depicted using a diamond and a small circle. The circle serves as a generic buoy/beacon marker, while the diamond is a distinct shape that appears in standard chart legends to represent buoyage features. This pairing matches what you’ll typically see in chart symbology, which is why it’s the best choice. The other shape combinations don’t align with the standard buoy symbols used on charts.