At the 72nd meeting of the Marine Environmental Protection Committee (MEPC), a draft of the initial strategy for reducing greenhouse gas emissions for IMO vessels was adopted.
The IMO has established a vision to continuously focus on reducing greenhouse gas emissions in international shipping and to eliminate greenhouse gas emissions as soon as possible within this century, and the level and target time of emission reduction goals have been determined as follows:
1) Carbon intensity of the ship to decline through implementation of further phases of the energy efficiency design index (EEDI) for new ships
2) To reduce CO2 emissions per transport work, as an average across international shipping, by at least 40% by 2030, pursuing efforts towards 70% by 2050, compared to 2008
3) To peak GHG emissions from international shipping as soon as possible and to reduce the total annual GHG emissions by at least 50% by 2050 compared to 2008
It is predicted that achieving the above goal of reducing greenhouse gas emissions will be difficult when using fossil fuels and that changes in ship fuel will be inevitable in the long term as the long-term action candidates for the initial strategy to reduce greenhouse gas emissions include “development and pursuit of supply of carbon-free or de-fossil fuels.” Biofuels, hydrogen, methanol, and ammonia are mentioned as alternative fuels, especially ammonia, which have relatively superior storage characteristics compared to hydrogen, and are considered carbon-neutral fuels that are more likely to be realized due to their low technical difficulty.
Therefore, please refer to the technical document on the characteristics and the current status of ammonia as ship fuel.