What shapes are used for daymarks fixed to poles?

• A. Green triangles or red squares
• B. Red triangles or green squares
• C. Blue squares or yellow triangles
• D. Red circles or green diamonds

Answer: (B)

Daymarks fixed to poles use color and shape to show which side of the channel is safe to pass. In this system, the two standard daymarks are a red triangle and a green square. The red triangle marks the left (port) side of the channel, and the green square marks the right (starboard) side. When navigating, you stay between them, so the red triangle will be on your left and the green square on your right. Other color/shape combinations aren’t part of this fixed-daymark convention, which is why the red triangle or green square pairing is the correct choice.