What does a red buoy indicate?

A red buoy is used to indicate the port side of the channel when approaching from the open sea or a waterway. This is part of the lateral buoyage system, which provides guidance to mariners regarding safe navigation. When traveling upstream, keeping the red buoy on the left side indicates that you are correctly navigating the designated channel. Understanding this system is essential for safe boating, as it helps in identifying safe passageways and avoiding dangerous areas.

Since this is a standard within the international navigation rules, it is critical for boaters to recognize that red typically signifies a port marker, which is opposite to green buoys that designate the starboard side. This distinction helps ensure that boaters can safely traverse channels and avoid grounding or collisions.