The argument distinguishes cruiser duties from the battle line: Britain expected its battleships to handle battleship fighting. Heavy cruisers could discourage larger raiders from operating freely while posing an overwhelming threat to smaller vessels. Their value came from scouting, presence, trade protection, and the ability to reinforce several kinds of force. This role only makes sense when viewed across a fleet rather than by comparing one ship's gun calibre with a capital ship's.
Notable Point · 10:03-10:28
What the Royal Navy expected heavy cruisers to do
Royal Navy doctrine treated heavy cruisers as deterrents to larger raiders and a serious threat to smaller ships, not as routine stand-ins for battleships.