Air emission from ship driving force for next generation marine technological and policy change: A review

The main and auxiliary machineries that move a ship are considered the heart of the ship. Climate change, ozone depletion and global warming that has been recognized as threat of this generation, is linked to ship machineries. This, in a reciprocal manner, is driving the wave of change in policy and technological change for newly built and existing ship. The current challenges being faced are the balance between efficiency as well as low pollution and lack of data for engine performance, and how much emission is being released, and how much impact release to air green house gas (GHG) affluence from machineries, which has health, acidification and structural damage, make implementation of evolving policy difficult. This paper discuss a review of current direction policy technological change emanating from impact of air emission and its inherent consequence of powered shipping, and chemical behavior of green house gases. The paper also present result of evolving mitigation option being explored by marine engine manufacturers for retrofit system of existing ship and new energy technology for newly built. The paper also present data base management requirement that can be effective for require implementation.