Which colors and numbers mark the left side of the channel as you enter from the open sea?

The left side of the channel as you enter from the open sea is marked with green colors and odd numbers. This system is part of the IALA (International Association of Lighthouse Authorities) buoyage system, which is designed to help navigators identify safe channels. As vessels enter a channel from the sea, green navigational aids indicating the port side are essential for safe passage and keeping track of direction.

Green colors are used to indicate the left side, or port side, of the navigation channel. Odd numbers on buoys enhance the ability to identify these markers, providing additional guidance to boaters, ensuring they remain safely within the channel. This consistent color and numbering system aids in preventing confusion and accidents while navigating, making it critical for boaters to recognize these signs. Understanding this system is vital for safe boating practices, especially in unfamiliar waters.