Nice one Matt! You didn't happen to snap one as she was falling off, did you?
Ironically enough, the same type of thing happened in Erie over the winter of 1994/95 at Erie Marine Enterprises. My dad was working there at the time, and as they put a riverboat, President Casino, in drydock (she runs over in Indiana somewhere) and drained the dock, the boat started rocking back and forth and fell sideways. They had to refloat her and pull her out. And it figures, he didn't have his camera at the time. :-?