Superbuoy

A charted category of unusually large buoy, generally more than five metres in diameter, whose size or function makes it a significant hazard or high-consequence object.

IHO chart specifications use the category for items such as offshore loading or single-point mooring buoys and very large ocean-data-acquisition buoys. Their moorings, hoses, chains or operating exclusion areas may extend beyond the visible structure.

The term describes chart treatment rather than one IALA buoyage purpose or colour. Mariners should use the charted symbol, notes, lights, warnings and safe-clearance information, because close passage can endanger both the vessel and costly or hazardous equipment.

Enhanced Data Collection: Superbuoys are equipped with sophisticated sensors to measure various oceanographic parameters such as temperature, salinity, wave height, current speed, and direction, as well as atmospheric conditions.
Communication Systems: They often have advanced communication systems, including satellite and radio transmitters, to relay real-time data to researchers, maritime authorities, and other stakeholders.
Durability and Stability: Designed to withstand harsh marine environments, superbuoys are built with durable materials and stability features to ensure they remain functional even in severe weather conditions.
Power Systems: Equipped with robust power systems, including solar panels, batteries, and sometimes even small wind turbines, to ensure continuous operation over extended periods.
Environmental Monitoring: Used for monitoring environmental conditions and changes, including tracking pollution, harmful algal blooms, and other ecological phenomena.
Navigational Aid: Serving as aids to navigation, superbuoys can mark important locations, such as shipping lanes, underwater hazards, and marine protected areas.
Research Platforms: Providing platforms for scientific research, they can support various research projects by providing a stable and reliable source of data collection in the open ocean.