Wärtsilä LNGPac

Wärtsilä LNGPacTM is a complete fuel gas handling system for LNG fuelled ships and includes the bunkering station, LNG tank and related process equipment as well as the control and monitoring system.

We offer the LNG fuel system as a standalone product, as well as a part of a complete propulsion system. Wärtsilä can deliver LNG systems for propulsion and power generation for any applicable types of ship or engine.

The Wärtsilä LNGPac is designed and built according to classification society and flag state rules and requirements.

    Technical data
    • Type C pressure vessel. Design pressure 6-9 bar.
    • Pressurised or cryogenic pump based gas feed solution.
    • Vacuum (MLI and Perlite) or polyurethane insulation.
    • Horizontal, vertical, longitudinal and transversal placing.
    • LNG process equipment locatedinside built-on tank connection space or deck mounted vaporising skid.
    • Class approved safety and control system.
    • Remote actuated and manually operated cryogenic valves.
    • Dedicated control and monitoring system.

    The standard Wärtsilä LNGPacTM uses an IMO type C LNG storage tank. Bunkering takes place from the bunkering station to the LNG tank via an insulated pipe. The tank connection space contains all necessary process equipment and can be either mounted to directly to the LNG tank or placed remotely from the LNG tank.

    The main process equipment inside the tank connection space ensures correct gas temperature for the engines and maintains sufficient pressure inside the LNG tank. Wärtsilä is able to offer solutions for both vacuum insulated storage tanks and single shell storage tanks.

    The LNGPac gas supply system can also be customised to the needs of each project on a case to case basis by Wärtsilä Fuel Gas Handling’s expert team. We are able to conduct dedicated engineering at the beginning of the project to match the specific operational requirements, safety regulations, and the rules of each classification society.


    Wärtsilä can deliver LNG systems for propulsion and power generation for any applicable types of ship or engine, either as a standalone product or as a part of a complete propulsion system.

    Current references include the following ship types:

    • Product tanker
    • Cruise ferry
    • RoRo
    • RoPax
    • Small ferry
    • PSV
    • Tug
    Key benefits

    Our new and innovative features have made the LNGPacTM to a simple plug and play solution. The LNGPacTM includes the following benefits:

    Integrated Airlock
    In the new LNGPac the Airlock is integrated into the tank connection space. This reduces the floor space requirement, increases safety, and makes the installation for the yard much easier.

    Integrated Control Cabinet
    The control cabinet has also been integrated into the tank connection space. This innovation results in a dramatic reduction of interfaces, since the amount of electrical cabling from the tank connection space to the external switchboards can be significantly reduced.

    Integrated Gas Valve Unit (GVU)
    The functional components of the GVU can be to be installed inside the tank connection space. By combining the LNGPac and the GVU into a single, fully integrated system, considerable space can be saved and a simple ‘plug & play’ solution will save installation time and costs for the yard.

    Removal of the heating media skid and pumps
    The heating media skid is replaced by an intermediate heating media circuit in the tank connection space. The new circuit requires no pumps and is able to directly utilize the engines’ cooling water. Fewer interfaces are needed and less installation work is, therefore, required. By using fewer less electrical consumers, Wärtsilä is enabling ships to be even more environmentally friendly.

    Cold recovery solution

    Wärtsilä’s cold recovery solution enables the ‘cold energy’ of the LNG to be utilised by the ship’s heating, ventilation, and air conditioning (HVAC) system. In the new cold recovery system the vessel’s HVAC, or other refrigeration systems is directly connected to the tank connection space. In so doing, a complete circuit consisting of heat exchangers, valves, and pumps can be eliminated.

    Related references

    Related press releases

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