Ships use heavy fuel oil, which is the dirtiest transportation fuel in use today. https://en.wikipedia.org/wiki/Fuel_oil#Bunker_fuel https://en.wikipedia.org/w

Ships use heavy fuel oil, which is the dirtiest transportation fuel in use today. https://en.wikipedia.org/wiki/Fuel_oil#Bunker_fuel https://en.wikipedia.org/wiki/Fuel_oil#Bunker_fuel