Did the Battle of Coronel show that the Royal Navy's older global-presence ships were a flawed system?
Short answerNo. The defeat is attributed chiefly to dispersal and failed reinforcement. HMS Defence might have deterred von Spee, while an Invincible-class battlecruiser would likely have reversed the balance.
NotesThe value of global presence ships must be separated from the operational decisions that produced defeat at Coronel. Cradock's squadron was dispersed, weakly supplied, and denied reinforcements capable of changing von Spee's choices. The arrival of HMS Defence might have deterred an engagement by adding a modern armored cruiser with greater range and firepower. A single Invincible-class battlecruiser would have overmatched the German armored cruisers, making concentration and reinforcement the central issues rather than the inherent usefulness of older hulls.