Chart Number One is essential to correct and accurate use of nautical charts. More than a chart, it is a book that defines the symbols, abbreviations and terms used on charts. It also provides important information about buoys, light visibility (range) and aids to navigation. This new and improved edition from Paradise Cay is a complete and accurate high quality reproduction of information provided by NOAA and NIMA.

As in previous editions, the symbols used on paper nautical charts produced by NOAA and the NGA and digital raster representations of those charts, such as NOAA Raster Nautical Chart (NOAA RNC's), are presented in lettered sections organized in categories, such as Landmarks, Depths, and Lights.

The essential reference tool for reading maps, published by the Coast Guard, is now available to boaters in an attractive, colorful edition that includes important supplementary information about navigation. A must-have for all mariners, the first half of the manual reproduces the U.S. Coast Guard book, with coverage of basic chart concepts, the anatomy of a chart, how to read a chart, symbols and abbreviations associated with National Ocean Service and Defense Mapping Agency charts, and the chart numbering system. In addition, for extra value, the USCG version has been expanded to include navigation tips and techniques from Chapman Piloting and Seamanship, 64th edition, including details on positioning procedures, dead reckoning, and river piloting.

Chart No. 1 contains a description of the symbols, abbreviations and terms that appear on nautical charts produced by the National Imagery and Mapping Agency, the National Ocean Service and the International Hydrographic Organization.

New- 12th Edition of U.S. Chart No. 1, Symbols, Abbreviations and Terms used on Paper and Electronic Navigational Charts Please read the following information regarding this new edition. All Dealers are now required to sell only copies of the U.S. Chart No. 1 edition 12, in order to insure that mariners have the most up-to-date information. Covers of the Paradise Cay Publications (PCP) previous edition may be returned to us for full credit. Contact us for more information New in Edition 12: ECDIS Symbols and Other ECDIS Information Symbology for displaying Electronic Navigational Charts (ENC's) on an Electronic Chart Display and Information System (ECDIS) has been added to U.S. Chart No. 1. See the Preface and Introduction for more details. In addition to the ECDIS symbols shown in the traditional lettered sections of U.S. Chart No. 1, there are now several special pages devoted exclusively to providing important details about ECDIS. These pages are distinguished by the ECDIS icon, as shown below. The ECDIS pages are also listed in the table of contents in italic type.

There are two types of electronic charts: raster navigational charts (RNC) and electronic navigational charts (ENC). RNC are exact copies of paper charts and their use underway comes naturally to navigators accustomed to paper charts. All traditional paper charts, however, and their RNC are being discontinued by NOAA. Many are gone already and all will be gone in a year or so. ENC (also called vector charts), on the other hand, include much more information than RNC; they allow user-selected display options that enhance safety and efficiency; and they are easier to keep up to date. But they do not look like traditional charts, and they do not behave like traditional charts. Navigation with ENC is fundamentally different from navigation with paper charts or RNC. Electronic charting benefits all mariners, professional and recreational, large vessels and small, power and sail, racing and cruising. The unique information in this book should help mariners in any of these categories master the use of ENC to enhance their safety and performance underway. There are many virtues of ENC, but to take advantage of these, a new approach to "reading charts" is called for. This book explains and illustrates the process. From the Forward to the Second Edition Two primary factors have taken place since the first edition that affect the content of this book. Foremost is the ongoing NOAA program to redesign the layout of all ENC to make them more consistent amongst themselves and with the ENC from other nations. This is a major improvement. The process is called rescheming. The most apparent changes are the shapes and coverages of the individual charts, which, when reschemed, become regular and consistent. Chart scales and depth contour conventions are also improved, plus we get a larger (more detailed) compilation scale for many areas. On top of these changes, the USCG has just completed a call for comments on the proposed new ruling that vessels must have some electronic chart viewer on board to effectively read the official ENC. In other words, we are at the moment when ENC have gone from an optional substitute for paper charts to being a required method of navigation. With all of this going on, we can see why NOAA decided it was time to take on the daunting task of rescheming all of the US ENC. We have added an appendix on rescheming to cover the details of the changes and how we recognize them in conjunction with what we now call the legacy ENC that exist before rescheming. The full conversion will take some years to complete, so we will be using the legacy ENC layouts for quite a while to come. The interpretation and basic use of ENC does not change with the reschemed charts. When a topic comes up in the book that is affected by rescheming, we make note of the changes with a reference to the appendix. There is also a short appendix on the new NOAA custom chart program (NCC); another on Inland ENC, the US Army Corps of Engineers charts for the Western Rivers; and one emphasizing a recommended vessel icon set up for navigation in strong wind or current. An overview of the next generation ENC called S-100 has also been added as an appendix. The second primary factor that has led to updates in this edition was the preparation for and first experiences we have had with our new training course on Electronic Chart Navigation. Many sections throughout the book have been enhanced to reflect the practical experience we gained. Interactions with students first learning a new subject is an invaluable resource we are lucky to have. Topics with more extensive updates include: coverage of the Quality of data object and Zone of Confidence attributes; treatment of magnetic variation; use of safety contour and safety depth; plus a new section on the use of encrypted S-63 charts with a specific example using the newly free ENC from New Zealand.

The best handbook on chart usage, from one of the most trusted names in boating In 2000, the U.S. government ceased publication of Chart No. 1, the invaluable little book that generations of mariners have consulted to make sense of the complex system of signs, symbols, and graphic elements used in nautical charts. Now Chart No. 1 is not just reborn but expanded and improved in How to Read a Nautical Chart. The demand for a book like this has never been greater. Arranged and edited by Nigel Calder, one of today's most respected boating authors, --and containing four-color illustrations throughout,-- How to Read a Nautical Chart presents a number of original features that help readers make optimum use of the data found in Chart No. 1, including a more intuitive format, crucial background information, international chart symbol equivalents, electronic chart symbology, and thorough explanations of the practical aspects of nautical chart reading.