I think we faced the same conundrum that the committee did. We knew we wanted to change the scope of the act, and the question was what was the best way to do it? Trying to come up with a definition to limit the scope of the act proved very difficult.
In the end, we thought the best way was to establish criteria, to identify those bodies of water where commercial navigation was indeed a high priority, and to try to come up with a list of appropriate waterways to which the act could apply. Then, as the deputy minister pointed out, should we find out that we've omitted something or a water has been missed for whatever reason, give us the ability to add them in if so required.