The special contributions for the various types and categories of vessels shall be between 70% and 115% of the following rates: (a) Dry cargo vessels: (i) self-propelled barges: EUR 120 per tonne; (ii) pushed barges: EUR 60 per tonne; (iii) lighters: EUR 43 per tonne. (b) Tanker vessels: (i) self-propelled barges: EUR 216 per tonne; (ii) pushed barges: EUR 108 per tonne; (iii) lighters: EUR 39 per tonne.