What is the symbol for a control buoy?

• A. Orange diamond
• B. Orange square
• C. Orange diamond with cross
• D. Orange circle

Answer: (D)

In this marking system, a control buoy is shown as an orange circle. The orange color flags a special or non-lateral mark, and the circle shape is the simple, unmistakable symbol used to designate a fixed control point in a course or drill. This makes it easy to spot and distinguish from other marks that use different shapes (like diamonds or squares) to convey different instructions or warnings. So the orange circle best represents the control buoy because its shape and color are chosen to clearly signal a point you use to control or navigate a course.