HOME | ABOUT US | CONTACT | REGIONAL MANAGERS
 
  Nautical Charts & Pubs  
 
  Nautical Charts & Products  
     •   Print-on-Demand Charts (POD)  
     •   PDF Nautical Charts  
     •   Raster Navigational Charts: NOAA RNC®  
     •   Electronic Navigational Charts: NOAA ENC®  
     •   BookletChart™  
     •   Chart Updates (LNM and NM Corrections)  
 
  Nautical Charting Publications  
     •   United States Coast Pilot®  
     •   U.S. Chart No. 1  
     •   Chart Catalogs  
     •   Dates of Latest Editions (DOLE)  
     •   Upcoming New Editions  
 
  Nautical Charting Utilities  
     •   NOAA's Online Chart Viewer  
     •   NOAA ENC® Online  
 
  Historical Products  
     •   Historical Maps and Charts  
     •   Historical Coast Pilots  
 
  Learn About Charting Products  
     •   Obtain Charting Products  
     •   How Publications are Updated  
     •   Differences Between Maps & Charts  
     •   Learn About Nautical Charts  
     •   DGPS & Your Chart  
     •   Differences Between NM and LNM  
     •   Differences Between RNCs and ENCs  
     •   Differences Between NOAA ENC® and DNC®  
     •   Differences Between ENC and ENC®Direct to GIS  
 
  Data Portals  
     •   Tides and Currents (General)  
     •   nowCOAST: Real-Time Coastal Data Map Portal  
     •   Physical Oceanographic Real-Time System (PORTS)  
     •   Nautical Charting Links  
 
  Resources  
     •   Chart Carriage Requirements  
     •   Report a Charting Discrepancy  
     •   Chart Inquiries (questions/comments)  
     •   Cartographic Automation  
 

Source Information on Nautical Charts
The nautical chart conveys a wealth of information to the mariner. The graphic below illustrates a sample of the type of information that appears on nautical charts.

This graphic shows a nautical chart with 11 different types of features that are circled.  The legend below describes what the source of each charted feature is.  1. Floating aids to navigation established and maintained by the U.S. Coast Guard mark channels and other features such as wrecks and obstructions.
2. The U.S. Army Corps of Engineers dredges channels so that deep draft vessels can transit into and out of ports. Mariners must know the position and depth of these channels.
3. Nautical charts delineate the location of anchorages for military, commercial, and recreational vessels.
4. NOAA shows official geographic names in conformance with the U.S. Board of Geographic Names.
5. Fixed aids to navigation , such as lighthouses maintained by the U.S. Coast Guard, help mariners navigate safely.
6. Mariners need to know bottom characteristics to determine where adequate holding grounds for anchoring are located.
7. Depths determined by NOAA surveys are critical to safety of navigation.
8. Mariners must know where underwater hazards and obstructions are located. The chart shows the precise position and depth of water over the obstruction.
9. Most commercial ships entering a harbor need to know where pilotage areas are located. These areas are used for taking on and leaving off marine pilots.
10. Mariners need to know the position and depths of dangerous wrecks , so they can lay out a track to avoid these features.
11. Wire drag cleared depths show the safe navigation depth. This charting symbol indicates that there was at least 20 feet of depth available over the top of the obstruction located here.
User Survey  | Privacy Policy  |  Disclaimer  |  NOAA's National Ocean Service  |  NOAA  |  U.S. Department of Commerce 
Web site owner: NOAA Office of Coast Survey