Well....
[td]Armament[/td]
en.wikipedia.org
and the Kalibr missiles ...
3M54E (export anti-ship version): 220 km
3M54E1/3M14E (export anti-ship version): 300 km
3M54K/3M54T: 660 km (domestic anti-ship version, estimate)
3M14K/3M14T: 1,500–2,500 km (domestic land-attack version, estimate)
Not exactly unprepared to manage both the unexpected aerial and surface attack and targets of opportunity. Even if they stick with the 3M54s in the containers and don't graduate to the 3M14s they have significant areas of influence. And are considerably more mobile than a fixed land base.
...
Consider the prospect of one of those based at Nagurskoye, Russia's "Trefoil Base" on Alexandra Land.
It is within sailing distance of Svalbard, the island group Russia shares with Norway and to which it has invited to share facilities for research. An AOPS with a 660 km SSM missile like the 3M54K/3M54T would essentially choke off traffic between the Arctic and the Atlantic at the GIUK Gap.
And those containers on the back deck might contain missiles or they might just contain supplies and research gear for the Russian settlement on Svalbard.
Equally, they might contain the 3M14s in which case the entirety of Scandinavia, the UK as far south as Nottingham, the Faroes, Iceland, the entirety of Greenland, all of the islands of the Canadian Archipelago, the entirety of the North Warning System, Point Barrow and the Pribiloffs, would all be held at risk. Or not.