I totally agree NS. To have made it back with that kind of damage was good work! I see what you are saying about the collision now. WIth the size of that sub, that's alot of mass moving along to come to a full stop so quickly.
Speaking of submarines, NS; Have you ever read the book "Blind Man's Bluff: The Untold Story of American Submarine Espionage"? It is quiet an interesting book.