(1) Taxes of the port for the actual use of certain local establishments, such as wharves, warehouses etc. The tariff of such taxes to be calculated on the expenses of construction and support of the said local establishments, and in its application to be independent of the origin of the vessels and their cargo.
(2) Pilotage dues on sections of the river, or where it appears necessary to establish stations of certificated pilots.
The tariff of these dues to be fixed and proportionate to the services rendered.
(3) Dues in respect of the technical and administrative expenses, imposed in the general interest of the navigation, and comprising light-houses, beacon, and buoyage dues.
Dues of the last description to be based on the tonnage of the ships, according to the papers on board, and to be conformable to the regulations in force on the Lower Danube.
The tariffs of the taxes and dues mentioned in the three preceding paragraphs are not to admit of any differential treatment, and are to be officially published in each port.
The Powers reserve to themselves the right, at the end of five years, by mutual agreement, to inquire into the above-mentioned tariffs in case they require revision.
Article XV.
The affluents of the Congo shall, under all circumstances, be subject to the same regulations as the river of which they are the tributaries.
The same regulations shall apply to the lakes and canals as to the rivers and streams in the territories defined in Article I, paragraphs 2 and 3.