In which IALA region are green buoys on the starboard side when entering a harbor?

In Region B of the IALA Maritime Buoyage System, green buoys are placed on the starboard side when entering a harbor. This means that vessels should keep the green buoys to their right side as they approach the entrance. This buoyage convention helps mariners navigate safely by creating a standardized method of marking navigational channels, allowing for clear communication and understanding across different regions.

The IALA system is divided into two main regions: Region A, where red buoys are typically on the starboard side when entering a harbor, and Region B, which is the opposite. By establishing these regional differences, the IALA ensures that mariners can quickly identify buoy colors and their meaning based on their location. In practical terms, this differentiation is crucial for safe navigation as it reduces confusion, particularly in international waters where vessels from various regions may operate.