Liquefied natural gas ships are less virtuous than it seems

November 2020. The world leader in maritime transport, the French giant CMA-CGM, inaugurates with great fanfare the filling of the holds of its flagship with liquefied natural gas (LNG). A world first for a boat of this size, which its owner hailed as a major environmental breakthrough: “LNG is an energy of the future, which preserves air quality by eliminating 99% of sulfur oxides and fine particles. , and makes it possible to emit up to -20% CO2 emissions compared to a fuel-powered engine. »