What type of lateral marker is indicated by even numbers?

The type of lateral marker indicated by even numbers is green-colored buoys. In the system of lateral markers used in the United States, which follows the IALA (International Association of Marine Aids to Navigation and Lighthouse Authorities) standards, even-numbered buoys are green and are used to indicate safe channels for vessels. These buoys are typically placed on the left side of a vessel when entering a harbor from the sea and are used to help boaters navigate safely through waterways.

Green buoys serve a vital role in helping to mark navigational routes, enhancing both safety and efficiency in boating. The numbered system helps mariners determine their position relative to these markers and follow safe paths to avoid hazards. Other colored buoys serve different functions, such as red-colored buoys indicating the starboard side of a channel, but even-numbered green buoys are specifically designated to provide direction and indicate safe passage areas.