Directive 2009/21/EC of the European Parliament and of the Council of 23 April 2009 on compliance with flag State requirements was published on the 28th of May 2009. The purpose of the Directive is to ensure that member states effectively and consistently discharge their obligations as flag states, to enhance safety and to prevent pollution from ships flying the flags of a member states. The Directive enters into force on the 17th of June 2009 and its provisions must be implemented by member states no later than the 17th of June 2011.