What should be done when approaching a marker displaying a yellow square?

When approaching a marker displaying a yellow square, it's important to recognize that this type of marker indicates information regarding hazards or other important navigation instructions that should be observed. In this case, the appropriate response is to keep the marker on the port side, meaning that you should pass it on your left when approaching from the downstream direction. This is in line with established navigation rules, which help ensure safety on the water by providing clear guidelines on how to respond to various markers.

Ignoring the marker would disregard critical navigational information, which can lead to dangerous situations, particularly in waters with potential hazards. Turning the boat around could also be unnecessarily risky and disruptive unless the situation clearly warrants it. Keeping the marker on the starboard side would be incorrect since that would mean passing it on the right, not in accordance with the guidance provided by the yellow square. Understanding how to correctly interpret these markers is essential for safe boating practices.