What type of number is used to identify port side buoys?

Port side buoys are identified using odd numbers. This system is part of the lateral buoyage system established to assist mariners in navigating waterways safely. The numbering and color scheme serve as a visual cue to maintain a consistent and recognizable reference for boaters.

In the lateral buoyage system, odd-numbered buoys are traditionally placed on the port (left) side of a vessel when traveling upstream or towards the harbored water. This standardization helps ensure that all vessels follow the same navigational principles, reducing the risk of accidents and aiding in the overall organization of water traffic.

By utilizing odd numbers, the system creates a clear and predictable pattern that mariners can rely upon, thus reinforcing the safety and efficiency of navigation in channels and harbors.