
Ocean Shipping Has A Surprising Hidden Methane Problem
A new study by Chalmers University reveals that ships passing through shallow, methane-rich waters release significant bursts of methane, a greenhouse gas 28 times more potent than CO₂. The turbulence from ship propellers and seafloor pressure changes push dissolved methane from sediments into the atmosphere, with emissions up to 20 times higher than undisturbed areas. Container and cruise ships are the biggest contributors due to hull and propeller designs. This overlooked source means global shipping’s climate impact is being underestimated, underscoring the need for better monitoring and regulation of methane emissions in major shipping lanes.