Category C substances
14 Category C substances
Section 21 of the Act does not apply in relation to a discharge from a ship of a Category C substance or a mixture containing a Category C substance if:
an authorised officer has approved procedures and arrangements:
that are based on standards developed by the IMO;
(ii) that ensure that the rate of discharge of the Category C substance or the mixture containing a Category C substance will result in a concentration of the substance in the wake astern of the ship that is not more than 10 parts in one million parts; and
(iii) that provide that the maximum quantity of the substance or mixture to be discharged is, in the case of each tank of the ship from which the discharge is to be made (including the pipe system associated with the tank):
one one-thousandth of the tank capacity in cubic metres; or
3 cubic metres;
whichever is greater;
(b) the effluent does not also contain a Category A or B substance; and
(c) the discharge of the Category C substance or mixture is made in accordance with:
the approved procedures and arrangements; and
regulation 16(1).
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