How do certain buoys provide information about tides?

Certain buoys are equipped with tide gauges that relay real-time information, making them a reliable source for understanding tidal conditions in specific areas. These buoys measure tidal levels and can transmit this data, often to local authorities or directly to mariners. This capability allows boaters and coastal management officials to have current and accurate information regarding tidal ranges, which is critical for navigation, fishing, and other marine activities.

While other options describe various functions of aids to navigation or communication tools, they do not specifically address how buoys inform users about tidal changes. The presence of tide gauges on specific buoys is a technological advancement that enhances safety and operational efficiency in marine navigation by providing valuable insights into the natural conditions of the water body.