The Latest Explore our most recent, fact-based content on marine shipping in Canada. View blogs, research, and key issues featured below. What Are HNS? Many chemicals transported by sea are considered hazardous and noxious substances that can have significant impacts when spilled into the marine environment. MEOPAR Commercial Shipping Issues in Canada’s North Clear Seas and MEOPAR have funded a two-year study to assess marine shipping trends over the past 30 years in the Canadian Arctic, focusing on two sites in the Northwest Passage. Who Pays for an Oil Spill If an oil spill were to happen in Canadian waters tomorrow, who would pay for it? Learn about the costs and liabilities related to ship-source oil spills. Places of Refuge When a vessel is damaged, disabled or otherwise in distress at sea, finding a place of refuge – a place where it can be taken to prevent further damage to the vessel or pollution to the environment – can be critical.