YANMAR has been working on studies of global environment protection for years in order to develop technology. In recent years, such efforts have steadily brought us successful achievements. One of those achievements is that YANMAR has become the first Japanese engine manufacturer to obtain the "Statement of Compliance for Engine Air Pollution Prevention "based on the IMO NOx emission limits from Nippon Kaiji Kyokai (NK) in Sept 1998.

NOx(Nitrogen Oxide) Regulation by
IMO(International Maritime Organization)

The Appendix to the protocol, Annex VI Regula-tions for the Prevention of Air pollution from Ships of MARPOL 73/78 which was adopted in the confer-ence of parties to the International Convention for the Prevention of Pollution from Ships in September 1997, and it comes into effect from May 19, 2005.
The air pollutant emission regulations apply to die-sel engines with output exceeding 130kW. For ves-sels operated internationally, the regulations apply retroactively to vessels built on or after Jan.1, 2000. For vessels operated in Japanese waters only, they apply to engines of the vessels built on or after May 19, 2005.