RoRo (Roll-on/Roll-off) vessels are suitable for vehicles, construction machinery and large equipment that can be driven on and off the ship. Cargo rolls on and off via the vessel’s built-in stern or side ramps without shore crane lifting, delivering high terminal handling efficiency, which makes RoRo shipping ideal for exporting construction and engineering vehicles. Typical cargo categories accepted by Shanghai Yiqi International Freight Co., Ltd. are as follows: Self-propelled units – passenger cars, commercial vehicles, buses, trucks, tractors, dump trucks, wheeled or tracked equipment such as tractors and harvesters with functional engine, steering and braking systems; Construction machinery – excavators, loaders, bulldozers, motor graders, road rollers, mobile cranes, pavers, etc.; Non-self-propelled cargo – static goods unable to move under their own power (such as transformers, generators, boilers, large steel structures, yachts and rail rolling stock). These can be loaded onto MAFI roll trailers and towed on and off the vessel by terminal Tugmaster tractors. RoRo vessels are categorized by deck clearance and ramp load capacity: Pure Car Carriers (PCC) usually have a deck clearance of 1.7–2.5 meters and ramp capacity below 25 tons, suitable for sedans and light trucks. PCTC and heavy-ramp RoRo ships feature multiple decks, clearance above 3.5 meters and stern ramp load capacity of 150–200 tons for tall and heavy construction machinery. Charging is generally calculated by lane metre (occupied deck length × lane width), per unit, or by volume and weight. Prior to booking, we need to confirm whether the equipment can drive aboard (ground clearance, gradient climbing capability), overall dimensions and weight, whether attachments require removal or securing, residual fuel level (most carriers impose limits), oil leakage risk and battery disconnection status, as well as RoRo handling availability at the port of loading and discharge. Over-width, over-height or heavy single-unit cargo requires advance declaration and a lashing plan. If the equipment cannot be rolled at all, exceeds deck load or clearance limits, or the destination port has no RoRo terminal, flat racks, open-top containers, breakbulk or heavy-lift vessels are recommended alternatives. Final cargo acceptability is subject to shipping line approval.