Ro-Ro Vessels: Ro-Ro vessels carry any type of wheeled cargo, which are typically automobiles and heavy machinery.

Roll-on/roll-off (RORO or ro–ro) ships are vessels designed to carry wheeled cargo, such as cars, trucks, semi-trailer trucks, trailers, and railroad cars, that are driven on and off the ship on their own wheels or using a platform vehicle, such as a self-propelled modular transporter.