Harmful substance means any substance which, if introduced into the sea, is liable to create hazards to human health, to harm living resources and marine life, to damage amenities or to interfere with other legitimate uses of the sea, and includes any substance subject to control by the present Convention.
Dangerous Substance means any radioactive emissions and any natural or artificial substance (whether in solid or liquid form or in the form of a gas or vapour and whether alone or in combination with any other substance) which, taking into account the concentrations and quantities present and the manner in which it is being used or handled, it is reasonably foreseeable will cause harm to man or any other living organism or damage to the Environment including any controlled, special, hazardous, toxic, radioactive or dangerous waste.
Narcotic drug means any of the following, whether produced directly or indirectly by extraction from substances of vegetable origin, or independently by means of chemical synthesis, or by a combination of extraction and chemical synthesis:
Dangerous Substances means a substance or article described in regulation 3 of the Dangerous Substances Regulations;
Chemical substance means a substance intended to be used as a precursor in the manufacture of a controlled substance or any other chemical intended to be used in the manufacture of a controlled substance. Intent under this subsection may be demonstrated by the substance's use, quantity, manner of storage, or proximity to other precursors or to manufacturing equipment.