2. If the certificate referred to in Article 6 is not carried on board, and without prejudice to Directive 2009/16/EC providing for detention of ships when safety issues are at stake, the competent authority may issue an expulsion order to the ship which shall be notified to the Commission, the other Member States and the flag State concerned. As a result of the issuing of such an expulsion order, every Member State shall refuse entry of this ship into any of its ports until the shipowner notifies the certificate referred to in Article 6.