There is one instance that I'm aware of in which a foreign-flag vessel fishing outside of Canada's exclusive economic zone was directed by its flag state into a Canadian port. But under legislation as currently enacted, my understanding is that unless the boat requests entry into the port itself, which it may not choose to do if it is in violation of applicable laws, we don't currently have the legal authority to accommodate that situation. It has occurred in at least one instance of which I am aware.
On March 12th, 2015. See this statement in context.