Certainly on one of the science vessels, the oceanographic vessel, the last thing is a replacement for the Hudson. It will have some ice capability, and the fisheries research vessels will as well. The Hudson has operated in the far north in season--the kind of September-October timeframe. Clearly there is science work to be done in the Davis Strait, and so on.
I just want to be clear that these science vessels could work in the north, but not in the way you've asked the question. I don't want to leave the impression that they have no capability to do science work in the north. They will when seasonal conditions permit. The oceanographic ship would certainly have the ice capability of the Hudson, so it could operate in modest ice conditions.