It's not voluntary. There is a traffic management framework for vessels that enter into the Port of Vancouver from the sea. Vessels have to follow that routing system. How that routing system is managed in the future might need to be looked at. I think some of that research that I've described already will go a long way in helping to look at the options that might be smart in that situation for that specific challenge relating to marine mammals.
On May 9th, 2017. See this statement in context.