The game prompt leads to a useful corrective about the all-big-gun battleship. HMS Dreadnought retained smaller weapons because destroyers and torpedo boats demanded a faster-firing answer. The phrase "all-big-gun" is advertising shorthand rather than a literal description of every weapon aboard. A capital ship's main battery did not replace the need for close-range defence against small, fast attackers.
Notable Point · 1:48:21-1:48:49
Why all-big-gun ships still need smaller guns
Rapid-fire secondary guns remain necessary to counter destroyers and torpedo boats.