This publication is an inventory of symbols and abbreviations used in Norwegian as well as in international nautical charts (INT-charts).

Symbols and Abbreviations on Norwegian Maritime Charts is prepared according to the guidelines recommended by the International Hydrographic Organization (IHO). The chart symbols are numbered according to «Chart Specifications of the IHO» (International Hydrographic Organization), which came into force at the XIIth International Hydrographic Conference 1982 in Monaco.

The publication is revised and issued as required.

Download Symbols and Abbreviations on Norwegian Maritime Charts

Download the publication Symbols and Abbreviations on Norwegian Maritime Charts (INT1) (pdf 3 MB).

As a part of the Norwegian Hydrographic Service's long term strategy on releasing data, the publication is available for download, free of charge, on the Norwegian Mapping Authority's websites

The publication is also available for purchase through our distributors.

Norwegian chart symbols

Norwegian maritime charts contain mostly international symbols, but there are still some special Norwegian symbols appearing in some hardcopy maritime charts. In these cases the Norwegian chart symbol is compared to the corresponding international chart symbol


In Norwegian the publication is named Symboler og forkortelser i norske sjøkart. It also goes by the name INT 1 or the Norwegian INT 1. It is the Norwegian version of the publication INT 1 – Symbols, Abbreviations and Terms used on Charts.