Judgment_paragraph 53 · Deutscher Naturschutzring – Dachverband der deutschen Natur- und Umweltschutzverbände e.V. v Bundesrepublik Deutschland (C-683/16)

53However, it follows from Article 91(1) and Article 94(1) of the Montego Bay Convention that the EU is obliged to respect that ships have the nationality of the State whose flag they are entitled to fly and that every State is to effectively exercise its jurisdiction and control in administrative, technical and social matters over ships flying its flag.