Roll-on Roll-Off Ships:

Ro-Ro is an acronym for Roll-on/roll-off. Roll-on/roll-off ships are vessels that are used to carry wheeled cargo.
Pure Car Carrier (PCC) and Pure Car and Truck Carrier (PCTC) RoRo Ships
Container Vessel + Ro-Ro (ConRo) Ship
General Cargo + Ro-Ro Ship (GenRo) Ships
Complete RoRo Ships