How might a sister ship for HMS Tiger affect the Second World War?
Short answerIt would add another battlecruiser and more tactical options, depending on the refit schedule, while Beatty would likely have served in the sister rather than Tiger.
NotesA surviving sister adds heavy-gun firepower and gives the Royal Navy more choices when distributing fast capital ships. Its exact contribution cannot be separated from whether it receives a useful interwar refit and is available for the relevant campaigns. The additional hull also changes Beatty's likely First World War flagship assignment.