LNG may contain less carbon than conventional marine fuels, but that does not necessarily make it shipping's greenest fuel option, according to a scientific study.

An International Council on Clean Transportation (ICCT) analysis concludes that LNG releases more greenhouse gas (GHG) emissions over a 20-year span than marine gasoil (MGO), very low-sulphur fuel oil (VLSFO) and heavy fuel oil (HFO) on a well-to-wake basis.