Does the expression RO-RO sound difficult for you? Read here to find out more.

RO-RO comes from the words roll-on/roll-off. It means a vessel that is specialized for transporting wheeled cargo such as cars, busses, trailers, tractors, railroad cars, etc, which are driven on and off the ship on their own wheels.

Such vessels have a  built-in ramp to allow the cargo to be rolled on or rolled off.

The decks of RO-RO-vessels are measured in units of “lanes in metres (LIMs)”. In order to move the cargo liftable decks or cargo elevators are used.

The video below shows how cars are loaded onto a RO-RO vessel.

Various types of RO-RO vessels include ferries, cruiseferries and cargo ships.
There are also vessels that carry only a specific cargo type. For instance car carrier or vehicle carrier, which has specialized into carrying cars. Such vessels look like shopping mall parking lots from the inside. A lot of cars stacked inside onto many decks. Bigger car carriers can carry up to 8 000 vehicles. Such vessels are used to typically transport cars to different countries.

There are also vessels that have the possibility for railroad cars to be rolled on. And probably the most common ones are the ferries that can carry both passangers and cards.

The length of the RO-RO-vessel is typically inbetween 120 – 240 metres (393 – 787 ft) and speeds go up to 22 knots. All in all, there are today about 1 500 RO-RO-vessels altogether.