The thickness of the armored decks was two inches throughout the ship.
It did reduce the area that needed to be covered by the armored deck, which saved additional weight.
The "roof" of the citadel was an armored deck.
However, by the end of the 1870s, ships could be found with full-length armored decks and little or no side armor.
The armored deck was raised one level to link it directly to the top edge of the belt armor.
Otherwise, their only protection by the lower armored deck, which extended as far as these areas.
The explosion also probably knocked a hole in the armored deck over turbine room 1.
A heavy shell penetrated the main armored deck toward the bow.
The challenge then became to continue the longitudinal strength contributed by the armored deck past this point to the end of the stern.
This was why the idea was adopted to place half the boilers above the armored deck.