Both paper and electronic nautical charts are produced in Finland, by the Finnish Transport and Communications Agency.
Nautical charts portfolio
The catalogue contains updated information about the printed and electronic nautical charts. The catalogue also includes a map service where you can see the progress of the N2000 fairway and nautical chart reform, as well as review the boundaries of various chart products.
Chartcorrections are published as Notices to Mariners. (External link)
Nautical chart products
Both paper and electronic nautical charts are produced in Finland. The coordinate system used for nautical charts is WGS-84. General information about nautical charts can be found here (pdf) (External link).
Paper nautical charts are produced using the international chart symbols (INT). The chart symbols are based on the international standard S-4 of the International Hydrographic Organisation (IHO).
The production of electronic nautical charts complies with the international standard S-57, IHO Transfer Standard for Digital Hydrographic Data. This standard defines the technical implementation of electronic nautical chart material.
Coordinate system
The coordinate system of Finnish nautical charts, EUREF-FIN, is based on the international maritime standard WGS 84 coordinate system, which is also used by the GPS satellite system. EUREF-FIN aligns with the WGS 84 coordinate system with an accuracy of about one meter, so in practical navigation, the difference between the coordinate systems does not need to be taken into account. In the list of lights, all coordinates are presented only in this system.
In Finland's inland waters, there are still a few chart products produced before 2003 that are based on the national mapping coordinate system (KKJ). The reference ellipsoid is the international reference ellipsoid INT 1924 (Hayford 1910). The WGS 84 coordinate system used by the Global Positioning System (GPS) satellite navigation system differs from the KKJ system. These charts are identified by their green color. New charts are blue. On the old green charts, the light identifiers are presented with Finnish and Swedish abbreviations.