There was a plan for Canada to buy 12 French type nuclear subs to patrol the Arctic and scare away the Russians and the USA! I had dinner with a Canadian in London who explained it all to me. It went nowhere. This is about 1988 or so.

Almost sounds like the current Australian submarine plan which is screwed up. I wonder if the subs carry better rifles than 223 when they surface and polar bears attack. I think I read a story about some hassling Russian arctic subs.