A control marker buoy is a type of navigation aid that is used to mark the location of a navigational hazard or obstruction. Buoys are typically anchored in place and can be made from a variety of materials, including wood, plastic, or metal. Control marker buoys are usually outfitted with reflective tape or paint so that they are visible at night. Some buoys also have lights that flash or shine intermittently to further increase their visibility.
Control marker buoys are an important part of maritime navigation and are used by both commercial and recreational vessels. They play a vital role in ensuring safe passage through areas that might otherwise be dangerous. When approaching a control marker buoy, it is important to exercise caution and follow any posted regulations. Failure to do so could result in collision, grounding, or other serious accidents.