The Swedish subs have always been for coastal protection with little endurance. With the exception of deployment to the Gulf of St. Lawrence, I don't think a small sub would be of any use to Canada and a frightful waste of resources. A sub capable of lurking out near the Grand Banks for several weeks needs to be a little larger than 2000 tons or the crews will go berserk.Maybe we could do a mixed fleet with a light sub under 2,000 tons and a heavy sub over 4,000 tons.