I was the Canadian expert who helped write the first draft of the port state measures agreement, and I was there through all of the negotiations on refining it.
It did take us quite a while to get the treaty ratified in Canada. Notwithstanding that, we had implemented most of the measures in the port state measures treaty through our other treaties, like NAFO and ICCAT and other RFMOs before that.
It didn't change very much of what we do in Canada when foreign ships land here, but it gives us the mechanism to address these things elsewhere in the world. If vessels happen to be fishing in proximity to Canada but outside of our 200-mile limit, then we can make the request that wherever the vessel lands to, it gets inspected according to the measures of the port state measures agreement.
Yes, I think it helps.