Alcoa's $4.1bn acquisition of South32's bauxite, alumina, and aluminium assets across Australia, Brazil, and South Africa could reshape dry bulk shipping demand by consolidating major bauxite and alumina supply chains. Changes in sourcing, export controls, or refining locations — particularly involving Guinea's growing role as a key bauxite supplier — may significantly alter tonne-mile demand for bulk carriers on long-haul routes such as Guinea-China.