What is the light colour for a Lateral Port Hand Mark in Region A?

In the IALA Maritime Buoyage System, lateral marks are used to indicate the sides of a navigable channel. Specifically for Region A, which includes most of the world such as Europe, Africa, and parts of Asia, the color red is designated for Port Hand Marks. These marks help mariners determine safe passage when approaching a harbor or navigating through channels.

When a vessel approaches from seaward, the Port Hand Mark will always be on the left side of the vessel. The red color plays a crucial role in this system, as it is easily distinguishable from green, which is used for Starboard Hand Marks in Region A. This clear color differentiation is essential for safe navigation, especially in congested or challenging waterways.