She was a treaty-cheating interwar Battleship (not a battlecruiser) ... Somewhat heavier than the contemporaneous US "South Dakota" class and lighter than the US "Iowa" class, with a significantly inferior main battery to either of these US battleship classes.
The Fairey Swordfish torpedoes didn't sink her. Two of them caused damage and flooding, endangering the engine rooms. Moffat's final torpedo wrecked her rudders ... She was destroyed the old fashioned way, by gunfire and torpedoes from numerous Royal Navy ships of all classes.
The Bismark was a state of the art battleship for the START of WW-II. Of interest was that the Bismark’s main battery had a rate of fire 50% faster than any other battleship in WW-II.
For an in depth comparison of WW-II BB’s see here...
http://www.combinedfleet.com/baddest.htm
Regards
alfa6 ;>}