Vanguard is presented as a borderline case: extensive armour coverage gave her attributes associated with a fast battleship, but major areas retained battlecruiser-level subdivision. Hanging that armour on the inherited internal arrangement also created difficulties later in the ship's life. Subdivision matters most for damage control and resistance to sinking, even if it is less visible than armour thickness. The terminology therefore captures a real design tradeoff rather than simply a public-relations label.
Notable Point · 21:49-23:28
Vanguard's mixed battlecruiser and battleship qualities
Vanguard combined battleship-level armour coverage with a hull whose subdivision still resembled a battlecruiser's.