Prolly just a little scrapped paint and bent railing. I'm surprised more of this doesn't happen - and maybe it does but we never/rarely hear of it. I was Naval Air (VP Navy) so I never witnessed replenishment at sea.
But I imagine someone's career is over.
I'm surprised more of this doesn't happenIndeed. If one has never seen an underway replenishment, they're really something to behold.
I've seen more than I can count.