Ships emit large quantities of nitrogen oxide and volatile organic compounds. To comply with the stricter Tier III requirements, it is necessary to reduce NOx emissions. For a diesel engine to comply with IMO Tier III, nitrogen oxide (NOx) emissions have to be reduced by about 70%. This usually requires the installation of a selective catalytic reduction (SCR) system. An SCR system reduces NOx emissions by converting the harmful gases into inert nitrogen and water vapour. A modern SCR system ensures that ships and boats comply with Tier III emission standards by reducing NOx emissions to about 2 to 3,4 grams per kWh. This is where we come in. Emigreen specialises in equipping four-stroke engines with a rated speed greater than 600 rpm with a modern SCR system capable of meeting current requirements. We can also equip Tier II engines with an external catalytic converter, such as the Emigreen MINOx SCR system, which reduces levels of NOx emitted by marine diesel engines to well below IMO Tier III limits.