What feature can navigation charts provide that enhances situational awareness?

Navigation charts are essential tools that provide critical information to enhance a mariner's situational awareness. One of the most vital features they offer is the indication of tide schedules and currents. This information allows navigators to understand how water levels and flow patterns change throughout the day, which is crucial for safe navigation.

When a navigator is aware of tide schedules, they can plan their routes more effectively, avoiding shallow areas at low tide that might ground their vessel. Understanding currents is equally important, as it affects maneuverability and speed. Knowledge of these maritime conditions helps prevent accidents and ensures efficient travel.

While the other options may be useful in different contexts—such as locating points of interest or understanding environmental factors—these do not directly enhance situational awareness in the same way. Tide and current data are directly relevant to navigation and play a critical role in decision-making on the water.