What aspect of oceanographic data is crucial for navigation?

Data on tides and water levels is crucial for navigation because these factors directly influence the safety and efficiency of maritime operations. Understanding tides is essential for determining when a vessel can safely enter or leave a harbor, navigate through narrow channels, and anchor. Tides affect water depth, which can either expose underwater hazards or create sufficient clearance for passage.

Additionally, water level data helps in planning routes, especially in coastal areas where depth changes significantly with tidal shifts. Without accurate tidal and water level information, a ship may risk grounding or encountering difficulties that could jeopardize its mission and crew safety. Therefore, this information is integral to effective and safe maritime navigation.