What does a yellow buoy with a black top signify?

A yellow buoy with a black top signifies a special mark indicating it may be a limit of certain activities. These types of buoys are used to indicate areas where certain navigational restrictions or rules apply, such as speed limits or areas designated for specific uses like swimming or fishing.

Understanding the purpose of various buoys is crucial for safety on the water. While other buoy colors and configurations serve different functions, the combination of yellow and black specifically denotes these special restrictions or information. This helps boaters understand the regulations they must adhere to within that area, promoting safe and responsible navigation.