As I recall, the structural steel was fine and dandy, and never broke.
The manufacturer of the giant rivets, however, made them from the bottom of the furnace, and so there were large veins of slag running through them.... when she hit the iceberg, her panels flexed as they should have, but all the rivets broke.... which is a significant problem, in hindsight. :)
I think Zeepk is a similar story. ;)