Which buoyage system is followed in the United States?

The buoyage system followed in the United States is IALA A. This system, also known as the International Association of Lighthouse Authorities Region A, establishes a standardized method for marking marine navigational routes and hazards, helping to ensure safe passage for vessels.

In the IALA A system, which is used in the majority of the world, buoys are marked with red on the left when entering a harbor from the sea, while green buoys are on the right. Each buoy type carries its specific meaning related to navigational aids, ensuring that mariners maintain safe distances from hazards and follow clear pathways. This system is crucial for mariners to understand, as it facilitates safer and more efficient navigation in U.S. waters.

Recognizing the nuances of this system aids in the proper interpretation of navigational signals and contributes to overall maritime safety. Understanding the buoyage system is essential for any watch officer, as it directly impacts their responsibility for ensuring the safety of navigation.