What Bouy 5 flashing green light?

A buoy with a flashing green light, often referred to as a "green navigation buoy," is used in maritime navigation to indicate safe passage and mark a channel. The flashing light signifies that vessels should keep this buoy on their port (left) side when navigating. These buoys are part of the IALA (International Association of Lighthouse Authorities) system, which helps ensure safe navigation in waterways. The specific flashing pattern can also convey additional information about the buoy's position or type.