Design - but only sort of. It did something they didn't think about. That's VERY typical of many engineering failures. Things break because of load cases you didn't anticipate.
If you do your analysis properly on a bunch of load cases it is straightforward to design the structure to take these loads.
It's very easy to say "OK if the boat stuffs it's nose it will take XX seconds to slow down so that's YY g's and it's underwater 1.4m so that's an extra hydrostatic pressure to add". Then design a structure that withstands that.
It's much harder to say "OK the boat does a nosedive and at the same time rounds up and stuffs the bow sideways and the jib maybe fills with water too as it tries to come up". BECAUSE they didn't think about that particular load case.
"Oh we didn't think Bruce would drop the foil at just the wrong time to catch a tip on a whale and the whole boat does a reverse backflip and lands upside down...."
Please. If you are a designer involved with this embarrassment of a boat and you didn’t see this coming, you are an absolute idiot and DO NOT deserve to be involved at this level of the game.…