Marpol

Technically, Marpol 73/78 is a combination of the two international Marpol treaties which came into being in the year 1973 and 1978. The first treaty that came into force in the year 1973 prevented pollution by oil, chemicals and hazardous substances in packaged form. However, the people involved revised the treaty because of the series of tanker accidents that took place between 1976 and 1977. The new Marpol treaty was then re-adopted in February 1978.