I think it needs to be understood initially that the AOPS are ice-capable, not icebreakers. There's a fundamental difference there.
As it relates to the Coast Guard mission set, the two AOPS Coast Guard variants will have primary missions of offshore search and rescue and conservation and protection for the Northwest Atlantic Fisheries Organization. They will have secondary missions to enable science and ice track maintenance. For example, on Lac Saint-Pierre, once the icebreaking track has been made by an icebreaker, the AOPS service for the Coast Guard will be able to maintain that track.