The HELCOM Map and Data Service, which has been serving as one of the largest hubs of spatial data for the Baltic Sea marine environment since 2010, has been completely redesigned and rebuilt. The new system consists of two components, which are seamlessly interlinked:

1. HELCOM Map and Data Service: A map viewer user interface for visualizing datasets related to the Baltic Sea, each dataset linked to a metadata record in the new HELCOM Metadata catalogue


2. HELCOM Metadata catalogue: A searchable catalogue containing a description and lineage of each map made available by HELCOM, enabling user to find and download spatial data, and linking to HELCOM Map and Data Service for viewing the specific dataset


Compared to the previous version of HELCOM Map and Data Service, the new version provides the following key improvements:

  • Searchable table of contents in the map viewer user interface
  • Faster and more user-friendly map viewer, thanks to a more light-weight user interface which can run on any hardware platform (PC, Mac)
  • Searchable metadata repository and keywords for filtering datasets in the metadata catalogue
  • INSPIRE compliant metadata record for each dataset

With the current set of spatial data collected for assessments, HELCOM provides free access to more than 600 map layers in total, with maps ranging from biodiversity and species distribution to information on maritime traffic. The amount of available map layers will grow in the very near future, once the data used for the 2017 version of the State of the Baltic Sea report is published.  


Note for editors

HELCOM is an intergovernmental organization made up of the nine Baltic Sea coastal countries and the European Union. Founded in 1974, its primary aims as a governing body are to protect the marine environment of the Baltic Sea from all sources of pollution, as well as to ensure safe maritime navigation. The official name of HELCOM is the Baltic Marine Environment Protection Commission; it is the governing body of the Helsinki Convention.


For more information, please contact:

Joni Kaitaranta
Data coordinator
Tel: +358 46 850 9206
Skype: helcom37
E-mail: joni.kaitaranta(at)