RoRo Glossary

Here is a list of key terms and abbreviations used in Roll on Roll off shipping. If there is a term not on our list that you need assistance with please contact us.
Terms / AbbreviationsDescription / Definition
B/L Bill of Lading - This is the document with all key details of the shipment. Among other information it describes the RoRo cargo, who owns it, its origin and destination. It is a document of title to the cargo.
ConRo The ConRo (or RoCon) vessel is a hybrid of a RoRo and a container ship. This type of vessel has a below-deck area used for vehicle storage while stacking containerized freight on the weather deck. ConRo ships carry a combination of containers, heavy equipment, oversized cargo, and automobiles.
GenRo General Cargo + Ro Ro Ship (GenRo) Ships. A normal general cargo carrying vessel equipped with the RoRo ramps is termed as the GenRo.
H&HHigh and Heavy, referring to cargo which requires a ship fitted with adjustable decks to allow stowage of cargo outside the dimensions of a standard car.
LIMLanes In Metres is a measurement of vessel capacity which takes into consideration, the cargo deck length, the number of vehicle decks and the number of lanes on each deck.
Linear MetresLinear metres is a method of freight calculation used by some carriers mainly operating deep sea ferry services in European trade lanes. Instead of calculating the freight amount by the number of revenue tonnes multiplied by the freight rate, linear metre freight calculations are based on deck or lane space utilisation. To calculate the freight cost using linear metres you use this formula. ((Length(m) x width(m)) divided by 2.5) x the freight rate/linear metre = Freight Amount
LMSRLarge, Medium-Speed Roll-on/Roll-off (LMSR) refers to several classes of Military Sealift Command (MSC) roll-on/roll-off type cargo ships. Some are purpose-built to carry military cargo, while others are converted.
PCC Pure Car Carrier is a RoRo vessel built specifically to transport cars with a standard 1.8m high deck height and loading ramps to drive / roll cargo onboard.
PCTCPure Car / Truck Carrier is a RoRo ship fitted with adjustable decks to accommodate cargo of a larger size than a car. Cargo such as construction and mining machinery can be shipped on PCTC RoRo vessels.
PODPort of Discharge
POLPort of Loading
RoLoA RoLo (roll-on/lift-off) vessel has ramps serving vehicle decks but has other cargo decks only accessible when the tides change or by the use of a crane.
RoPaxThe acronym RoPax (roll-on/roll-off passenger) is a RoRo vessel with capability to carry vehicles along with passenger accommodation. RoRo ships with facilities for more than 500 passengers are often referred to as cruise ferries rather than RoPax.
RoRoRoll On Roll Off - the term used to describe cargo which can be rolled onto and off RoRo vessels via loading ramps.
RTIs a term taken from RT43, which is a 1966 Toyota Corolla. This was the first mass production car to be shipped in a specialised car carrying ship or RoRo ship. Therefore this became the basis of describing a RoRo vessel's capacity. 1 RT is approximately 4m of lane space required to store a 1.5m wide Toyota Corolla.

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