Under the vessel pollution and dangerous chemicals regulations, which are regulations made under the Canada Shipping Act, 2001, there is a prohibition at section 95 that cites:
A person or vessel must not discharge sewage or sewage sludge except in accordance with section 96 or in the circumstances set out in section 5 that apply in respect of the discharge.
Thereafter, in section 96, it limits the discharge in certain circumstances, which are specifically set out. They are fairly lengthy. I could read them if you like.