Green colors, green lights, and odd numbers mark which side of the channel?

The left side of the channel is marked by green colors, green lights, and odd numbers. In typical navigation practices, especially following the IALA (International Association of Lighthouse Authorities) buoyage system, aids to navigation use a color coding system to indicate which side of the channel a vessel should keep to when entering from the sea.

Green markings signify the port side, which aligns with the standard practice where odd-numbered buoys are used to indicate the left side of the channel when approaching from seaward. This system helps mariners navigate safely, ensuring they are aware of the layout and which side to pass on, preventing any potential groundings or collisions.

In contrast, the other options do not correspond with the established navigation rules. The right side is typically marked with red and even numbers. The center of the channel generally does not have specific color markers as it can vary. Shallow areas are usually indicated with caution markers and do not have the standard color coding associated with channel sides.