British grand strategy needed ships across the world

Britain's strategic geography drove the requirement for the Tribal-class destroyer. The Royal Navy was expected to deter conflict, sustain diplomatic relationships, bind the empire together, and protect commercial routes used by many countries. Memories of First World War casualties, together with the prospect of more destructive weapons, made avoiding another conflict a central objective. Policy assumed that secure and profitable trade gave states reasons to preserve peace, so overseas naval presence served economic protection and deterrence. The Navy organized those commitments through geographic commands, with the Home Fleet, North Atlantic, and Mediterranean forming the Tribals' main peacetime operating areas. Cruisers represented British power farther overseas, while most destroyers remained near the main fleets, creating demand for a ship that could cover some cruiser duties without using scarce cruiser tonnage.