About roll-on/roll-off operations
PortWatch classifies vessels by AIS-reported type. The Roll-on/Roll-off classification covers pure car and truck carriers (PCTCs), ro-pax ferries, and project cargo ro-ro tonnage. Stern and side ramps allow wheeled cargo to drive on and off, supported by paved marshalling yards capable of staging thousands of vehicles or trailer units between vessel calls. Across the indexed dataset there are currently 37 vessels in this category calling at 36 distinct ports, with the heaviest concentrations at the gateways listed in the panel above.
Operationally, roll-on/roll-off tonnage is measured in units (cars, trucks, trailers) handled, and the design of any port that handles this tonnage in volume reflects the cargo’s physical and chemical characteristics. Berth depths, crane outreach, yard layout, hazardous-materials zoning, and the connecting rail or pipeline infrastructure are all dictated by what the vessel is carrying. Because of this, the same shipping company will typically use very different terminals for very different parts of its fleet â even within the same port complex.
For a country-specific breakdown of roll-on/roll-off activity, choose a maritime nation from the countries directory and follow the vessel-type link in its profile; PortWatch maintains a dedicated page for every meaningful country × vessel-type intersection, indexed for both browsing and search.