The USN has little success sinking a carrier even when they try. They end up having to scuttle them to sink them.
-—sinking a carrier even when they try? Yup. Remember McCain doing his best to sink the Forrestal? Then the same crew transferred to the Enterprise and they tried again. That time McCain transferred to the Oriskany days before. Fortunately the gooks got him before he could wreck the Oriskany.
I remember shipping out huge piles of steel plate for both of those repairs. But that below-the-waterline honeycomb structure of our supercarriers requires a whole lot of hole-poking to create sinkage.