Chart No. 1: Nautical Chart Symbols, Abbreviations and Terms provides descriptions and depictions of the basic elements and symbols used on nautical charts published by the National Oceanic and Atmospheric Administration (NOAA) and the National Geospatial-Intelligence Agency (NGA). This document also shows the "INT1" symbols described in the Regulations of the IHO for International (INT) Charts and Chart Specifications of the IHO published by the International Hydrographic Organization.
Edition 11, dated November 2011, supersedes all previous editions of U.S. Chart No. 1.
Download a free copy of U.S. Chart No. 1, Edition 11:
Viewing PDF files requires use of the Adobe Reader.
The U.S. Government does not publish paper copies of Chart No. 1.
Paper copies of U.S. Chart No. 1 are no longer published by government. However, paper copies may be purchased though one of NOAA’s certified U.S. Chart No. 1 Publishing Agents listed below:
OceanGrafix, LLC ProStar Publications, Inc.
NOAA continues to seek sources and certify U.S. Chart No. 1 Publishing Agents to print official paper copies of U.S. Chart No. 1. Entities interested in becoming a Publishing Agent should look for the U.S. Chart No. 1 announcement in FedBizOpps
Preparations for Chart No. 1, Edition 12 are underway.
Edition 12 will feature the addition of the symbols specified
by the International Hydrographic Organization for the
portrayal of Electronic Navigational Chart (ENC) data on
Electronic Chart Display and Information Systems (ECDIS).
If you have questions or comments about U.S. Chart No. 1,
please contact us through NOAA's Nautical Inquiry System.