Because of the high cost of compliance and risks paired with using new oils, most shippers are now using Marine Gas Oil (MGO).
MGO can be implemented without major modifications but will still need a fair amount of work to function as the primary fuel. Vessels using MGO can experience cold flow issues in frigid waters, causing clogged fuel lines and operational disruptions, or even loss of propulsion. Overheated MGO can become too light, leading to sealing problems. Despite these challenges, the right technologies can mitigate the issues, making it the most pragmatic option.