In 1807, President Thomas Jefferson established the Survey of the Coast in order to support safe transportation through the United States' waters. Today, the Office of Coast Survey is part of the National Oceanic and Atmospheric Administration's (NOAA) National Ocean Service. Their mission is to ensure "safe and efficient maritime commerce on Americaâs oceans and coastal waters, and in the Great Lakes." As part of this work the Office prepares seafloor and harbor maps (which are available on this site), and prepares information about wrecks and obstructions within bodies of water and their surrounding areas. Visitors can use the "Surveys & Wrecks" section to learn about such matters, and they may also wish to use the...