That's an excellent question, and certainly the ferries are a fairly significant component of the overall sound profile of the southern B.C. coastal waters, largely because of the number of voyages they have. When you're looking at 9,000 to 10,000 deep-sea vessels, you're probably looking at 12,000 to 15,000 ferry transits. They're very involved in this process of measurement and they're also looking at mitigation options.
On May 9th, 2017. See this statement in context.