USS Nevada (and class mate USS Oklahoma) were the first USN BBs to use an all-or-nothing armor scheme that kept vital functions and sufficient buoyancy in a "box" with maximum armor and structural steel elsewhere. It took multiple torpedoes of a strength for which she was not designed to sink Oklahoma. And it took a bomb made from a 16" shell to sink Arizona (of the class after the Nevada class), which was armored against her own, 14", guns. USN all-or-nothing BBs were tough ships, and even more so when updated after PH.