Any Union certificate of qualification referred to in Articles 4 and 5, as well as any service record books or logbooks referred to in Article 22 that have been issued by the competent authorities in accordance with this Directive, shall be valid on all Union inland waterways.
Teastas cáilíochta ar bith de chuid an Aontais dá dtagraítear in Airteagal 4 agus in Airteagal 5, chomh maith le haon leabhair thaifid seirbhíse nó logleabhair dá dtagraítear in Airteagal 22 a d’eisigh na húdaráis inniúla i gcomhréir leis an Treoir seo, beidh siad bailí ar uiscebhealaí intíre uile an Aontais.