AC BreakingFoiling

what is it?

Screen Shot 2016-03-04 at 1.46.20 PMSharp-eyed mothie Joe Turner pulled a screen grab from yesterday’s Oracle capsize, and look what he found: A mystery!
Said Tom Slingsby:  Gotta say I am enjoying reading the different theories, but it really is what I said it is. Below the bottom bearing is what we call the sliding door which keeps a flush surface to the hull throughout our 15 deg Cant range. This day it busted and was causing some drag. However, believe what you want, we get a good kick out of hearing some of the theories.
But we all know Oracle sailors will say whatever the chequebook tells them to… So, is it a super-secret foil fence?  Maybe it’s a supercavitating thingamabob?  Camera pod?  Ride height sensor?  Herbie 2.0? A turd flown over from Rio?
Weigh in.