Agreement of exhaust air pollution and substances from ships included in MARPOL Treaty (73/78) Annex VI of IMO Air Pollution Control, has been enforced since 19 May 2005. Ships by more than 130 kW class of diesel engine that sail within 200 nautical miles from the coast may cause the serious problems of pollution. It is necessary to develop a new control system for the pollutants emitted from the ships. In this study, a scrubber equipment was developed to reduce the pollutants of NOx and Particulate Matters (PM) in the exhaust tube. The equipment has three stage scrubbers that spray seawater, acid and alkaline water were generated by electrolysis of seawater. NO changes nitrocyl chloride (NOCl) with Cl2 in the acid water. This resulted 73% of reduction rate of NO. However, the reduction rate of NO and PM are 14.3% and 70% respectively at exhaust gas flow of 570 l/min.
