Office of Coast Survey
National Oceanic and Atmospheric Administration
U.S. Department of Commerce

National Hydrographic Survey Priorities

Determining the Hydrographic Survey Needs of the Nation

NOAA provides nautical charts and other products for the safe navigation of all mariners and maritime commerce for 3.4 million square nautical miles of U.S. waters. Updates to these nautical charts are, in part, accomplished by conducting hydrographic surveys that measure and describe the physical features of the seafloor in a body of water. However, due to the vast extent of U.S. waters and limited time and hydrographic surveying resources, U.S. waters must be prioritized for hydrographic survey to maximize efficiency.

Revised: 10/2/2017