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US Chart No. 1 Goes Electronic

U.S. Coast and Geodetic Survey Chart No.1 has described the symbols used on paper nautical charts for 65 years. Mariners have had a standard guide for understanding the symbols, abbreviations and terms used on paper nautical charts since 1948. In a major step forward, a new edition of that guide also describes the symbols specified by the International Hydrographic Organization for the display of electronic navigational charts (ENC) on Electronic Chart Display and Information Systems (ECDIS).