(28)Approval of training programmes is necessary to verify that the programmes comply with common minimum requirements regarding content and organisation. Such compliance allows for the elimination of unnecessary barriers to entering the profession, by preventing unnecessary additional examinations from being imposed on persons who have already acquired the necessary skills during their vocational training. The existence of approved training programmes could also facilitate the entry of workers with prior experience from other sectors into the profession of inland navigation, as they could benefit from dedicated training programmes that take account of their already acquired competences.