National Ocean Service (NOS)

The National Ocean Service (NOS) is a branch of the U.S. National Oceanic and Atmospheric Administration (NOAA) responsible for understanding and managing the nation’s oceans, coasts, and Great Lakes. It provides essential data, mapping, and tools to promote safe navigation, protect the environment, support economic growth, and enhance disaster preparedness. By monitoring sea levels, mapping underwater terrains, and studying marine ecosystems, NOS helps inform policies and decisions to ensure healthy, sustainable, and resilient coastal and oceanic areas.