In proceedings involving a dispute between the master and a member of the crew of a sea-going ship registered in Denmark, in Greece, in Ireland or in Portugal, concerning remuneration or other conditions of service, a court in a Contracting State shall establish whether the diplomatic or consular officer responsible for the ship has been notified of the dispute. It shall stay the proceedings so long as he has not been notified. It shall of its own motion decline jurisdiction if the officer, having been duly notified, has exercised the powers accorded to him in the matter by a consular convention, or in the absence of such a convention has, within the time allowed, raised any objection to the exercise of such jurisdiction.