Judgment_paragraph 30 · Cathal Boyle and Others v Commission of the European Communities (T-218/03, T-219/03, T-220/03, T-221/03, T-222/03, T-223/03, T-224/03, T-225/03, T-226/03, T-227/03, T-228/03, T-229/03, T-230/03, T-231/03, T-232/03, T-233/03, T-234/03, T-235/03, T-236/03, T-237/03, T-238/03, T-239/03, T-240/03)

30The case-law shows that an act does not lose its general scope and hence its legislative nature simply because it is possible to ascertain more or less precisely the number or even the identity of the persons to whom it applies at any given time as long as there is no doubt that it is applicable as the result of an objective situation of law or of fact which the act specifies and which is in harmony with its ultimate objective. It is not sufficient to demonstrate that the measure in issue applies only to a closed group' of traders (Case T-298/94 Roquette Frères v Council [1996] ECR II-1531, paragraphs 41 and 42). In any event, in the present case the group of persons connected with specific vessels is not established, since a vessel may change owner.