Squire Patton Boggs has previously issued client alerts highlighting various issues relating to shipping decarbonization, including the US-UK shipping corridors announcement and a separate overview of emerging alternatives to traditional fossil fuels for the global shipping industry. A new alert and discussion are warranted in light of the announcement on April 11, 2025, that the International Maritime Organization’s (IMO) 83rd session of the Marine Environment Protection Committee (MEPC 83) has agreed to draft rules mandating global greenhouse gas (GHG) emissions reductions.