According to CAI International, “Since the 1960’s, Heavy Fuel Oil (HFO) has been the king of shipping fuels. A byproduct of crude oil, HFO expels 35,000 ppm into the environment and accounts for 8% of the sulfuric dioxide in the air. The arrival of the IMO 2020 fuel regulation in 2019 signaled a formal move toward alternatives to HFO like…