6.—Section 10 of the Principal Act is hereby amended by the deletion of subsections (3) and (4) and the insertion of the following subsection:
“(3) The owner and also the master of any ship registered in the State which discharges into a prohibited zone for that ship any oil to which this section applies or any mixture containing not less than one hundred parts of oil to which this section applies in a million parts of the mixture shall be guilty of an offence.”
