Liquefied natural gas (LNG) is cited in various studies as the fuel of the near future. The world reserves of natural gas are significantly larger than the oil reserves. Because of this, LNG is considered to be excellent transition fuel for the energy carriers of the future, such as hydrogen and LNG produced from biomass (bio-LNG). Another advantage of this fuel is that combustion leads to virtually no emissions that form a health hazard, such as NOx, and PM(soot) particles. Also, the CO2 emission per energy-volume is lower than for gas oil for instance.

A huge advantage is that this technology can be added to upgrade existing engines. An inland navigation engine may last up to 35 years and a relatively new engine needn’t be replaced. In addition, this technology enables the user to sail on LNG as well as ‘regular’ fossil gas oil. This means that, should there suddenly be a lack of LNG, operations aren’t compromised. Obviously, Deen Shipping considers dual fuel to be the future!


In order to sail on dual fuel, an upgrade of the current diesel engine suffices. Thus, a relatively new engine – that may last 35 years – does not have to be replaced. By adding a gas train to the diesel engine and upgrading the engine management system, every current high- and medium speed engine is capable of handling dual fuel technology. This way, the existing inland navigation fleet can be prepared for the current and future emission standards.

Advantages for you

By deploying dual fuel technology, an emission reduction of at least 20% CO2, NOx and particulates can be realized, which has an added benefit of  potential costs savings of several Euros per kilometer. The reduction of the fuel consumption is calculated to be 20%.


The entire installation is under supervision of Lloyds Register, Inspectie Verkeer en Waterstaat, ADN and CCR. All of these parties have a say in this project.


In order to be able to sail on dual fuel, the regulations for inland navigation will have to be adjusted: currently, the regulations dictate that the flashpoint of the fuel used for propelling a barge, cannot be lower than 55 degrees, which only is the case with diesel. Deen Shipping is in consultation with the relevant bodies. An exception is made for the Argonon: the ship is allowed to sail on dual fuel.


In order to be permitted to sail with a LNG cryogenic tank aboard, a ship needs to comply with very strict safety requirements. The Dutch inspection for infrastructure and the environment (IVW) and Lloyds Register have performed a risk analysis which will lead to a so-called ‘equality certificate’.


“ A huge advantage is that this technology

can be added to an existing engine as an upgrade.”