Eiger LNG Refit

To meet the increasing demand for sustainable transport, Danser Group decided to refit one of their own barges (Eiger-Nordwand) with a Dual-Fuel (LNG / Gasoil) propulsion system. As a result, the engines of the Eiger will be powered by LNG for 98%

With this project Danser Group realizes the first ever LNG refit on a existing barge. The expected emmision reductions wil be 20% less CO2, 80% less NOx (nitrogen) and 95% less partical matter.

Main and auxiliary engines overview

The engines aboard the Eiger Nordwand have a total power output of 3,500 HP. With a capacity of 342 TEU this translates to a power of 10 HP / TEU.

This high capacity in combination with a low fuel consumption makes the inland waterway transport, and in particular the gas-driven Eiger-Nordwand to the most environmental friendly forms of container transport between Antwerp, Rotterdam and the upper Rhine.

2 x Dual-Fuel Wärtsilä 6L20DF

The dual-fuel main engines are located in the stern of the ship, and operate according to the lean-burn principle. For the ignition only a small amount of gas oil is added. This mixture of gas oil 2% and 98% gas lowers the combustion temperature and thus the emission of air pollutants.

To transport ADN (dangerous goods) cargo as well as ensuring safety and continuity, two main engines are installed. In case of a engine failure this always leaves enough power available for maneuvering of the ship.


146/176 kW/cyl
900 kW (1224 HP)


Auxiliary engines Eiger and Nordwand

In the bow of the Eiger as well as in the stern and the bow of the Nordwand of a rudder propulsion system is installed. These are used to maneuver the entire push tow combination but this also makes it possible to navigate independently with the Nordwand. All the engines except for the schottel drive in the Nordwand can be operated from the wheelhouse.

Bow thrusters

Portside bow thruster Nordwand

The Eiger has a bow thruster with an output of 350hp. This is centrally positioned in the bow to assist with maneuvering.

The Nordwand has two bow thrusters with a capacity of each 350hp, these are also used when maneuvering.

Emission Eiger-Nordwand compared to CCR I + II

The high capacity and low fuel consumption makes inland waterway transport one of the most environmentally friendly modes of transport. The positive balance of inland waterway transport is due to the low fuel consumption per tonne-kilometer.

This is not sufficient!

For years Danser Group is focusing on increasing the sustainability of the fleet. In 2011 the company was also awarded the Lean & Green Award. This by achieving a CO2 reduction of 25% across the fleet within two years. 3 of Danser Groups push tow combinations have a Green Award for Inland transport. They have met the strict requirements. These vessels are powered by 2 CCR2 class engines.


With the conversion of the Eiger Nordwand to LNG, Danser Group again made a pioneering contribution in the field of sustainability. The LNG refitted ship is in operation on the Rhine service from Rotterdam / Antwerp to Basel since July 2015, and on the first validation the delivered emission values are even better than predicted by the engine manufacturer. When compared to CCR2 class engines an impressive reduction in emissions is again achieved.

Classe Co² NOx PM
CCR1 2003 6,5 g/kWh 9,2 g/kWh 0,85 g/kWh
CCR2 2007 3,5 g/kWh 6,0 g/kWh 0,20 g/kWh

Impact on Human and Environment

greenhouse gas / concentration in the atmosphere / greenhouse effect / global warming

Impact on Human and Environment

air pollution / smog / airway problems / acid rain / affecting crops

Impact on Human and Environment

Collected in the lungs / heart and respiratory distress

LNG Tank

The LNG gas tank is located in the cargo hold of the ship in front of the machine room. The tank has a capacity of 60m3 gas, installation of the tank has reduced the capacity of the ship by 6 TEU. The LNG gas is stored in the tank at a temperature of -162 ° Celsius. Therefore, the tank is fitted with a special insulation.

Because there currently are no fixed LNG bunker station, the Eiger Nordwand easily bunkers the liquefied gas at specially designated locations in Rotterdam and Antwerp with the help of a tanker truck.

February 2012

Launch of the LNG project

Decision is made to convert the Eiger Nordwand to a Dual-Fuel propulsion system. It will be the first LNG refit on an existing barge.

June 2012

Start of the conceptual design

Project is fully described in order to serve as a guideline throughout the rest of the project.

May 2013

Launch of the detailed design

Through 3D CAD drawings a detailed design of the complete installation is made.

August 2013

Start construction of the LNG tank

Start with the construction of the LNG cryogenic tank with a capacity of 60 m3. Equipped with vacuum insulation, the tank in combination with a coldbox will supply the powertrain with the LNG gas.

October 2013

Two-day HAZID study

November 2013

Acceptance test LNG tank Spain

Construction of the LNG tank is officially completed.

Acceptance tests of the Wärtsillä engines in Finland

The two engines, type 6L20DF have a 900kW output per engine and are tested and demonstrated in Finland.

February 2014

Arrival of the LNG tank in the Netherlands

The LNG tank arrives in the Netherlands. From here it will be further assembled and the Coldbox will be added.

Received recommendation of CCNR committee in Strasbourg

On 20 February, after several presentations and consultations the final recommendation from the CCNR committee in Strasbourg is recieved.

Assembly of LNG tank progresses

April 2014

Eiger picks up LNG tank in Alphen

After the construction of the LNG-tank has been completed, the Eiger picks up the tank in Alphen and is heading off to the shipyard where the actual refit of the Eiger-Nordwand will be started.

The Eiger goes to the shipyard

Eiger-Nordwand goes to the shipyard to start the refit. In early June the work must be completed.

Progress at the shipyard

After the Eiger arrived at the shipyard the conversion started. The current engines have been taken out after the engine room had been opened. Furthermore the alterations to the dummietanks have been started and the new rear bulkhead is installed. In the engine room, new engine mounts have been made and shortened driveshafts are mounted.

May 2014

Shipyard update

The construction of the LNG compartment is progressing well with placement of the base of the LNG-tank and construction of the separation wall between cargo hold and LNG compartment. Also the two new LNG dual-fuel engines have entered the machineroom where they will be further assembled.

Shipyard update

The engine room is now closed. After finishing the final constructions of the LNG compartment, the LNG tank has been put into its final position. A start has been made with the placement of the roof on the LNG compartment.

June 2014

Shipyard update

The engine room operations continue; insulation is placed, the floor is mounted and the fresh air inlet for the engines is being finished. In addition, the various components for making the engines operate are placed, such as exhaust, ESD and GVU’s etc . The roof of the LNG compartment is now fully installed.

Eiger LNG Event

On the 19th of June, after a period of eight weeks at the shipyard, the Eiger Nordwand is festively re-commissioned.