There was a US sub (Rasher if I recall correctly) that was getting hounded by some sub chasers. They seemed to have a supernatural ability to know where they were at no matter which way they twisted or turned. After 24 hours of being held down, the captain decided to bring up the scope a bit and see what was going on. He discovered that there was an air leak in one of the pipes and they were simply watching the trail of bubbles to lead them to the sub.
I believe they closed that pipe off and was able to escape to port to have it fixed. However, the moral of the story is that yes, they used the scopes underwater at times. I don't know how well you could see the escorts around you but it was useful in this situation.
Chuck
|