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Everimpact joins MAMII to track maritime methane slip using onboard GHGs monitoring system


As part of the Methane Abatement in Maritime Initiative (MAMII) – Everimpact joins Safetytech Accelerator (STA), CoolCo, MOL and Shell to assess the feasibility of using our onboard, sensor-based GHGs monitoring system to track methane slip.



Tackling maritime methane emissions



LNG (methane) carrier at sea from unsplash
LNG (methane) carrier at sea


The International Maritime Organization has strong decarbonization ambitions for the industry.

It includes a reduction in both carbon intensity and overall emissions, with objectives of a 40% reduction in GHG emissions by 2030 and net-zero by 2050.

One of the decarbonization opportunities is to tackle two sources of methane slip;

  • emissions of unburned methane from engines

  • fugitive emissions from venting and leakage of liquefied methane transported by LNG carriers.

To be managed, methane slip first needs to be more precisely measured but the industry currently lacks reliable data on the problem. In particular, there are very few reports containing average data for current generation 2 and 4-stroke engines and gas turbines based on measurements of test bed engines using the appropriate engine test cycle.


A feasibility study to track methane slip with a real-time onboard solution.


Everimpact’s onboard GHGs emissions measurement platform has been developed through a consortium with Wilhelmsen Ships Services and Mitsubishi Corporation Group. The consortium has now joined forces with Tunable for installation of IoT sensors on the vessel to measure the exhaust directly from the funnel.

This system, already piloted on a ship, allows to monitor emissions of CO2, CH4, CO, NO, NO2 and SO2 from the exhaust. The data is visible through an online dashboard.


Everimpact has been chosen to assess the technical feasibility and cost of adapting their onboard GHG emission measurement solution to track fugitive methane emissions from venting and leakage in real-time. Everimpact will represent the Wilhelmsen Ships Services Corporation Group and Tunable consortium, and work in partnership with STA, Shell and MOL.

If the feasibility study confirms the suitability of the solution, the system is likely to be piloted on suitable ships.






Find out more about methane slip in shipping: https://www.transportenvironment.org/discover/methane-escaping-from-green-gas-powered-ships-fuelling-climate-crisis-investigation/


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