The fee regime is actually administered by the Coast Guard. As Ms. Weldon has described, fees are normally charged when a ship enters a Canadian port.
In the Arctic, there is a fairly far-reaching exemption of fees, particularly for ships that have more than 50% of their tonnage being used for community resupply. That applies north of 60°. There are details and nuances around this that are always under consideration, including ships that go north of 60° for a final destination that is south of 60°, if you think of Churchill.
In terms of the other part of your question, have we looked at charging fees outside of that framework? Yes, we have done some work. The general ethos, particularly as it pertains to search and rescue, is that we don't charge fees for that. We've worked through whether a cruise ship should have a fee structure applied to it when the primary service we might provide would be icebreaking, versus search and rescue, versus environmental.... There are some considerations there.
Internationally, the ethos is that you don't charge for search and rescue because you never want anyone to hesitate calling for help based on whether or not they have their Visa card with them.