Which information provided by oceanographic data aids in ensuring safety during navigation?

Current and tidal information is crucial for ensuring safety during navigation as it provides vital details about the movement of water in the oceans and seas. Understanding currents helps mariners anticipate how their vessel will be affected by water movement, which can influence steering, fuel efficiency, and overall travel times. Knowledge of tides is similarly important, as it informs navigators about water levels, which can impact coastal navigation, docking procedures, and even the suitability of navigational routes.

These variables can affect the vessel's stability, increase the risk of grounding, and influence navigation through narrow passages or busy ports. Thus, having accurate and timely information on currents and tides significantly enhances safety by allowing mariners to make informed decisions about their routes and operations. The other options provided do not directly relate to safe navigation practices in the same critical manner.