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Rh They further bind themselves to make the observance of these provisions obligatory upon private enterprises authorized either to establish or work coastal stations for wireless telegraphy open to the service of public correspondence between the coast and vessels at sea, or to establish or work wireless telegraph stations, whether open to general public service or not, on board of vessels flying their flag.

By "coastal stations" is to be understood every wireless telegraph station established on shore or on board a permanently moored vessel used for the exchange of correspondence with ships at sea.

Every wireless telegraph station established on board any vessel not permanently moored is called a "station on shipboard."

The coastal stations and the stations on shipboard shall be bound to exchange wireless telegrams reciprocally without distinction of the wireless telegraph system adopted by such stations.

Notwithstanding the provisions of Article 3, a station may be reserved for a limited public service determined by the object of the correspondence or by other circumstances independent of the system employed.

Each of the High Contracting Parties undertakes to connect the coastal stations to the telegraph system by special wires, or, at least, to take other measures which will insure a rapid exchange between the coastal stations and the telegraph system.

The High Contracting Parties shall notify one another of the names of coastal stations and stations on shipboard referred to in Article 1, also of all data necessary to facilitate and accelerate the exchange of wireless telegrams, as specified in the Regulations.

Each of the High Contracting Parties reserves the right to prescribe or permit at the stations referred to in Article 1, apart from the installation the data of which are to be published in conformity with Article 6, the installation and working of other devices for the purpose of establishing special wireless communication without publishing the details of such devices.