That's not the pressure hull.
I just don't get it - mountains don't just pop up out of nowhere. Seems like some heads should roll for the failures that led to the chart being innacurate.
I know it's not the pressure hull.
It's an observation, point of discussion, etc.
Maybe the plating bulged in that area and the pressure hull didn't. However, in reading the article, it doesn't say the pressure hull wasn't damaged, it says it wasn't penetrated.
Big difference.