MARPOL 73/78 Annex VI, Prevention of Air Pollution from Ships
Annex VI, which came into force on 19 May 2005, governs the control of the discharge of noxious substances from ship diesels. It is applicable to ship diesels with a power larger than 130kW built and installed since 1 st January 2000. The regulations limit discharges into the atmosphere of volatile organic compounds from tanker cargoes, sulphur oxide (SOx ) from the combustion of fuel oils and nitrogen oxide (NOx) from diesel engines. With regard to ozone depleting substances, deliberate discharge is prohibited. New installations, which contain ozone-depleting substances, are prohibited on all ships.