Member States shall ensure that boatmasters hold specific authorisations issued in accordance with Article 12 when:
((a))
sailing on waterways that have been classified as inland waterways with a maritime character pursuant to Article 8;
((b))
sailing on waterways that have been identified as stretches of inland waterways with specific risks pursuant to Article 9;
((c))
sailing with the aid of radar;
((d))
sailing craft using liquefied natural gas as fuel;
((e))
sailing large convoys.