Which information is most important when passing near a lighthouse?

The most important information when passing near a lighthouse is water depth. This is crucial because lighthouses are often situated near hazardous areas such as rocks, shallow waters, or other navigation obstacles. Knowledge of the water depth allows a boater to navigate safely and avoid grounding or colliding with submerged hazards that could lead to accidents or damage to the vessel.

By being aware of the depth of the water, boaters can make informed decisions about their route and adjust their course accordingly to ensure they remain in safe, navigable waters. Understanding water depth is fundamental to maintaining safe navigation practices near any significant coastal landmarks, including lighthouses.

The other factors like distance to shore, number of boats present, and wind direction are certainly important for navigation and safety but are secondary to the immediate need to ensure that the vessel is in water that is deep enough to avoid running aground.