The article regards the long controversial issue of classification institutions undertaking maritime administrative tasks. This issue has recently been regulated by both international (IMO) and European law. The author analyzes to what extent these changes are being implemented into Polish law. The consequences of European Union accession can be lethal for the Polish Ship Register. A great number of executive acts concerning "Polish classification institutions" will have to be changed quickly. Although the Polish Ship Register is not recognized by the European Commission, Poland has already applied for such recognition. However, potential recognition of this body will be effective in Poland only.