U.S. Office of Coast Survey

The U.S. Office of Coast Survey, an official agency under the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Department of Commerce, serves as the nation's primary source for nautical charting. This website offers access to critical information and tools essential for maritime navigation.

Users can download various chart products, including NOAA ENC® (Electronic Navigational Charts) and NOAA Custom Charts, along with accessing historical charts and training materials. The site also provides resources like the Chart Locator, ENC Viewer, and navigation updates to ensure mariners have the most current information.

Beyond charts, the platform features important publications such as the United States Coast Pilot®, U.S. Chart No. 1 (Chart Symbols), and Distances Between U.S. Ports. Strategic documents like the National Charting Plan and the Coast Survey Strategic Plan are also available, supporting safe and efficient maritime operations.