In the "show of strength" column, one also notes that unlike the Russian contingent, the Canadian warship (the HMCS Margaret Brooke, apparently) is not traveling in the company of an ocean-going tug (the Nikolay Chiker) to address the possibility that it breaks down and has to be towed back.
I don't think that this is protecting it from Ukrainian attack, though. The Black Sea Fleet is the one at risk there. This will be from the Russian (kagis for Admiral Gorshkov) Northern Fleet, their Arctic ships.
Actually, the Northern Fleet is the one that the Canadians actually are most-likely to be the ones to have to pay attention to. The US can sail submarines under the icepack, but has very limited icebreaker capacity, can't operate much by way of surface ships in the Arctic. That's mostly on the Canucks and the Norwegians, as things stand.
EDIT: Apparently that might actually be a Ukrainian attack. I was in a conversation on this in !noncredibledefense the other day. Apparently, in the Soviet Union, Ukraine built all the big gas turbine engines for warships. (The Admiral Gorshkov uses a gas turbine engine.) Then Russia invaded Ukraine, and Ukraine decided that they weren't going to be selling Russia any replacements or spare parts as long as that was going on. Russia built a gas turbine factory, UEC Saturn, but it's very constrained in capacity, can't produce new stuff at the rate Russia needs them, so it sounds like Russia is probably running engines longer than they're supposed to be run.