In theory, the "Formidabile" was also impervious for any guns that Austrian have on Lissa. And she was even better protected, with her complete belt without exposed ends. The results... weren't so good, decpite she weren't penetrated. It's a common misconception, that bigger, ocean-capable ships are able to dealt with coastal fortifications better than smaller, coastal designes.
In any case, the British mounted successful bombardments with battleships in the Crimean War and at Alexandria (1882).
As you can see from here:
the rudder is mostly red, with only a very small portion black. This matters because:
...if you examine the roman numerals at her bow, you can see that the white line is actually her historical load line. She's several feet higher out of the water as a museum ship than her design draft.