Which IALA region uses Red port, Green Starboard markers when returning to harbor?

In IALA Region A, the convention for buoyage is to use red markers for port (left) and green markers for starboard (right) when returning to harbor. This system aligns with the common practice of navigating towards a harbor, where mariners keep red buoys to their left and green buoys to their right. The IALA (International Association of Lighthouse Authorities) established this system to create a uniform and understandable navigation aid that enhances safety at sea, particularly in coastal waters.

In contrast, other regions like IALA B adopt the opposite color scheme (red to the right and green to the left when returning to harbor). This understanding is crucial for mariners to avoid confusion and ensure safe passage.