Qatar LNG expansion plan turns spotlight back on methane emissions The natural gas industry is a major emitter of methane, a powerful greenhouse gas that receives less attention than carbon dioxide, despite having a much higher warming potential. Sebastian Castelier | Qatar | Apr 22, 2021 A French container ship powered by liquefied natural gas is seen docked during its launch at a shipyard in Shanghai, China, on Sept. 25, 2019. The CMA CGM Jacques Saade is the first container ship of a series of nine with a capacity of 23,000 containers equivalent to 20 feet ordered in 2017. The LNG it uses is less polluting than the heavy fuel oil used in maritime transport. The ship is 400 meters long and 61 meters wide.