A bathymetric chart is a crucial tool in mapping the depths and topography of the ocean floor. It is also known by various other names, including a depth chart, bathymetry map, or seabed map. The term "oceanographic chart" is also used to describe maps that show the physical and geological features of the seabed. Another related term used is a hydrographic chart, which is a type of chart that shows the water depths and underwater features such as reefs, wrecks, and navigational hazards in a particular area. Regardless of the name, these charts provide vital information to scientists, marine geologists, and oceanographers, helping them understand the complex nature of the ocean floor.