Article 6

1. The obligation laid down in article 3, paragraph 2, of this Convention does not relate to vessels which have not been registered during construction in conformity with the provisions of article 5 of this Convention and which, on completion of their construction, proceed to the country in which they are to be registered.

2. The obligation laid down in article 3, paragraph 2, of this Convention likewise does not relate to vessels originating from a country not a Contracting Party and proceeding to the country in which they are to be registered.