Over 100 pages of valuable information on nautical chart symbols
U.S. Chart No. 1 describes the symbols, abbreviations and terms used on all NOAA, NGA and international nautical charts, as well as the symbols used to portray NOAA ENC® charts on ECDIS.
Download a free PDF of the latest edition of U.S. Chart No. 1 or
purchase a paper copy from one of NOAA’s certified publishing agents.
Download a list of changes
made to Edition 12 since it was released in April 2013.
Tips on some especially tricky symbols
Send questions or comments about U.S. Chart No. 1 to USChart1@noaa.gov