Interesting that they are still getting found. I also was not aware that they went so far into Canada and I also dunno what their intentions could be to go there. I imagine it kinda hard to attack enemy ships, unless they use the gun on the deck. But they get be discovered earlier or later anyway and going there is some kind of deathtrap, isn't it ? Why not camp in the ocean around where the river hits the Ocean and they got enough room to utilize their torpedos.
Maybe it was just some Captain being to keen to do well.