What is the flashing sequence for a south cardinal buoy?

The flashing sequence for a south cardinal buoy is characterized by six short flashes followed by one long flash in a 10-second cycle. This specific pattern is designed to help mariners identify the buoy's position and its navigational purpose clearly. South cardinal buoys are used to indicate safe passage to the south of the buoy, and the distinct flashing sequence allows for quick recognition in varying visibility conditions.

The pattern of six short flashes followed by one long flash provides a unique and recognizable signal that is less likely to be confused with the signals of other types of buoys. This specificity is crucial for navigation, particularly when navigating through busy waterways or during foggy conditions when visibility is reduced. Understanding this sequence is essential for operators to ensure safe passage and avoid hazards in their boating activities.