When sourcing small cargo vessels, buyers must prioritize Deadweight Tonnage (DWT) and Gross Tonnage (GT) to ensure the vessel meets specific cargo capacity needs. Key technical factors include the engine type and fuel consumption rates, as propulsion efficiency directly impacts operational costs. Additionally, inspect the hold dimensions and hatch cover types (e.g., hydraulic folding or pontoon) to ensure compatibility with your intended cargo, such as containers, bulk grains, or break-bulk machinery. Always verify the draft depth to ensure the ship can navigate the specific ports or river systems in your trade route.