Chart 1 : Symbols, Abbreviations and Terms

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Chart 1 provides explanations of the symbols, terms and abbreviations used in CHS nautical charts.

Chart 1 is a publication containing explanations of the symbols, abbreviations and terms needed to interpret nautical charts published by the Canadian Hydrographic Service. Member nations of the International Hydrographic Organization produce Chart 1 using a common format. That common format consists of sections identified by letters and symbols, abbreviations or terms identified by a reference number. All Chart 1s organize these sections and symbols, abbreviations, or terms in the exact same order.

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  • Please be advised that if you intend to print from the PDF the size expands substantially when uncompressed en-route to the printer.
  • Note on Printing: Due to the importance of colour in symbology printing in black and white only is strongly discouraged. Colour laser and ink jet printers are recommended.

Chart 1, 2012 edition booklet is available for purchase from an Authorised Chart Dealer.