The Oil Pollution of the Sea (Civil Liability and Compensation) Acts 1988 to 1998 give effect to these conventions. The liability convention governs the liability of ship owners for oil pollution damage. The convention lays down the principle of strict liability of ship owners and creates a system of compulsory liability insurance. The ship owner is normally entitled to limit his or her liability to an amount which is linked to the tonnage of his or her ship. The fund convention is supplementary to the liability convention. The main function of the international oil pollution compensation fund is to provide supplementary compensation for damage under the liability convention. The compensation payable by the IOPCF for any one incident is limited to 135 million special drawing rights, approximately €180 million, including the sum actually paid by the ship owner or his or her insurer under the liability convention.