With a long-keeled ship, the keel will not bend like that.
And as for "not the slightest damage", well, for me, read "not the slightest visible damage".
I wonder how it would slam in a big forward sea?
No, I had talked with the guys from the shipyard. No damage at all except a bent lead keel.
You have to decide what is being discussed
The discussion was about keels falling off
. Regarding the bent keel this is an all lead keel on a fast cruiser-racer. Keels on medium weight cruisers like the ones on the movies are stronger.
Regarding what would have happen with a full keeler hitting at full speed rocks well I guess it would have depended on the boat. The keel would not bent but the damages sustained on the keel and hull could be far more expensive to repair than a piece of bent lead. Jeff has explained already that quite well on a post on this thread.