In this paper, Joung, Kang, Lee and Ahn have concluded that it is inevitable for the domestic shipping and shipbuilding industry to undergo some changes such as strengthen regulations (EEDI/SEEMP), introduction of Market-Based Measures (MBM), and using alternative fuel vessel since the initial GHG strategy se up by the IMO; international shipping sector should be focused on and research on the nextgeneration eco-friendly fuel propulsion ships such as the hydrogen fuel cell, ammonia, bio-fuels etc; Finally, member states of IMO has to establish a national strategy (or National Action Plan, NAP) and to prepare short-, mid-, long-term measures and systematic approach to implement the IMO GHG reduction strategy to the relevant sectors.