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Cooperative Charting

The Cooperative Charting program helps the United States to maintain the accuracy of nautical charts and geodetic survey marker databases. Conducted in close partnership with the United States Corps of Engineers, the United States Coast Guard, and NOAA's National Geodetic Survey Division (NGSD), the program continues to be a major USPS/America's Boating Club public service. 


Tybee Light volunteers focus our efforts on NOAA charts 11507, 11511, and 11512, but we can also participate in the program anywhere in the United States. For more information on how you can get involved, contact our Cooperative Charting chairman.

Nautical Program

The Aid-To-Navigation and Bridge Inspection programs support the United States Corps of Engineers and Coast Guard in assuring waterways are properly marked and maintained.

Volunteers report observations to help maintain the accuracy of electronic (ENC) and paper charts. NOAA ENCs support marine navigation by providing the official ENC used in the Electronic Chart Display and Information System. Charts are updated weekly with Notice to Mariner corrections.

Cooperative Charting also reports on marina services and amenities.

Geodetic Program (Off the Water) 

Through the Geodetic program, volunteers help to verify the accuracy of reference points established on the surface of the earth by local, state, and national agencies. Maintenance and preservation of these marks are of utmost importance to users of the net and to NOAA's National Geodetic Survey Division.


Recognizing that many valuable geodetic marks are destroyed by construction, new roads, erosion, or for other causes, our job is to locate each of these marks and report their condition as Good, Poor, Not Found, or Destroyed, together with any change in the directions needed to locate them.

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