It does have the look of separated 'tabbing' caused by hull flexing on impact. I'd say you need another surveyor's take on this.. In what region of the hull were these pics taken?
If it turns out to be tabbing failure that could be a hugely expensive job for a proper repair.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)