What is the primary purpose of a navigation chart?

The primary purpose of a navigation chart is to provide detailed information on water depths, hazards, and navigational routes. These charts are crucial tools for mariners, enabling them to navigate safely through waterways. They depict various features such as underwater topography, buoy locations, shipping lanes, and navigational hazards like rocks and shallow areas.

By understanding the depth of the water and the specific routes available, navigators can make informed decisions, avoid dangerous areas, and ensure safe passage for their vessels. The comprehensive nature of navigation charts is vital not only for avoiding accidents but also for efficient travel and maneuvering in complex waterways. The other choices, such as weather conditions, fishing regulations, and aquatic wildlife, are important in their own right but do not directly relate to the core function of navigation charts in supporting safe and effective maritime navigation.