Considering the expansion of Monte Alegre’s hydrocarbon division, the wish to guarantee product quality as well as improve delivery times led Alkan to invest in its own navigation fleet to ensure self-sufficiency and strengthen supply chain integration. Navegación del Sur S.A. (Navesur), was thus established in 2010, in charge of transporting Monte Alegre’s fuel cargo by river.

Navesur also provides cargo services for other regional multinational companies that require compliance with strict standards regarding operational safety.

Employing the Paraguay-Paraná Waterway grants a significant advantage by considerably reducing transportation times. The main point of embarkation for international suppliers is located on km 171 of the Paraná Guazú River, with other cargo ports in Campana, Zárate, San Nicolás, and San Lorenzo. The point of disembarkation most frequently used is Monte Alegre’s fuel terminal in Terminal Occidental, located at km 1642 on the right margin of the Paraguay River. The northern stretch of the Paraguay River allows Navesur to transport cargo to Bolivia, passing through Ladario and Corumbá in Mato Grosso, Brazil.


The Paraguay-Paraná Waterway is a regional agreement between Argentina, Bolivia, Brazil, Paraguay, and Uruguay with the aim of facilitating navigation and thus regional and international trade. Comprising the Paraguay, Paranña, and Uruguay rivers, at 3,442 kilometers it is one of the longest natural waterways in the world, extending from Puerto Cáceres, Brazil to Nueva Palmira, Uruguay and Buenos Aires, Argentina. Its area of influence encompasses a direct surface area of 720,000 km² and an indirect surface area of 3,500,000 km². It is one of the most essential transport routes for the geographical integration of regional trade between Mercosur and the rest of the world.


Navesur’s fleet comprises two cargo convoys of six to nine tank barges, with a total cargo capacity of 34,250 m³. The fleet has been granted class certifications by RINA (Royal Institution of Naval Architects) , as well as vetting approvals by Petrobras and Axion Energy.

Fleet characteristics

Two push boats

  • 3.000 HP
  • Maximum draft of 7’ 6” for operation in shallow waters
  • Kort nozzle propulsion systems which allow a cost-efficient operation

Eighteen tank barges, four of which are fit to transport chemical and/or petrochemical products.