[thatguy96]

I'm quite confused by your reply, but to be perfectly honest, my command of your mother tongue is probably non-existant compared to your command of English so I have no right to complain.

I would like to see a schematic of the contruction of the shell, because from what I'm still understanding from what you said, I don't see it creating these massive cavitating craters.

I still don't see why my solution isn't workable either.