You are right on the mark!
I've been aboard a boat (and on a skimmer) where something unforseen happened. In the case of the boat, we struck a growler with our attack scope coming to PD. Bent the scope into a pretzel, and dented the sail pretty nicely. the ping jockeys never had any idea it was there---it was that small and made no noise that would give itself away.
Board of Inquiry was held and they said that it (not the exact words, of course) one of those things.
Skipper stayed, as did the OOD.
If you get anymore word on that boat can you guys ping me?
Maybe you'd be able to satisfy my curiosity...what'd be the effect on a sub if it were submerged in the path of an underwater tsunami? I understand they travel at hundreds of miles per hour.
We lost our #2 scope. Fortunately, it jammed when the OOD went "down scope".