What function does a "bifurcation mark" serve in navigational waters?

A bifurcation mark serves a critical role in navigational waters by indicating a junction or bifurcation point where the channel splits into two or more routes. This helps navigate safely, as it provides clear guidance on which route to take, thereby preventing potential collisions or grounding in unclear waters. The presence of this mark allows mariners to make informed decisions about their course, particularly in areas where the navigation path may not be straight or is subject to change based on tides or obstructions. Such marks are essential in maintaining safe and efficient waterway navigation, reinforcing the mariner's understanding of the channel's layout and aiding in the effective maneuvering of vessels.