Reducing total greenhouse gas (GHG) emissions from shipping by 50% by 2050 from the 2008 levels will be difficult to achieve just by extending the technological improvements already made and using LNG and LPG as a fuel.

Recognising that fact makes a switch to using renewable energy and carbon-free alternative fuels necessary.

Alternative fuels that the Mitsubishi Heavy Industries Group is considering can be seen in the chart, which is an estimate of the candidates that can meet the IMO's target: their manufacturing method, GHG reduction effect prediction when adopted, and the output level and cruising range of ships to which they can be applied.