When Ro-Ro vessel call at port, the door will latch at the rear of the ship. So rolling equipment and vehicles can drive in and out of the ship. Ro-Ro vessels are like having a huge, floating, multilevel parking lot, sailing between Middle East, Black Sea, Asia and everywhere. If not sent on a Roll-on, Roll-off vessel, vehicles can be containerized. One car can go into 1 x 20-ft container. Two (or more, depending on size) can go into 1 x 40-ft container. The majority of vehicles being shipped abroad go via RORO vessel. Cause by using RORO vessel, it will save a huge money and more convenient compare with the containers.