U.S. Chart No. 1: Symbols, Abbreviations and Terms used on nautical charts

From NOAA

 U.S. Chart No.1, Nautical Chart Symbols, Abbreviations and Terms, is an essential aid for new chart users and a useful reference for all mariners.

The new edition updates the descriptions and depictions of the basic nautical chart elements and symbols used on nautical charts produced by the National Oceanic and Atmospheric Administration (NOAA) and the National Geospatial-Intelligence Agency (NGA).

U.S. Chart No. 1: Symbols, Abbreviations and Terms used on Paper and Electronic Navigational Charts provides descriptions and depictions of three nautical chart symbology sets.

• "INT1" symbols specified by the International Hydrographic Organization (IHO).


• U.S. symbols used on nautical charts published by the National Oceanic and Atmospheric Administration (NOAA) and the National Geospatial-Intelligence Agency (NGA), when they differ from INT1 symbols.


• ECDIS symbols used to display Electronic Navigational Chart (ENC) data on Electronic Chart Display and Information Systems (ECDIS) as specified by the IHO.

Edition 12, dated April 2013, supersedes all previous editions of U.S. Chart No. 1.

(It supersedes the December 8, 2011, 11th edition edition of U.S. Chart No. 1.)

 

Free copies of U.S. Chart No. 1 in PDF format are available below:

Download U.S. Chart No. 1 (132 MB)
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