Why 6-inch volume fire suited the scouting mission

For a scouting cruiser, the immediate aim could be to damage directors, turrets, and upper works quickly enough to stop pursuit rather than sink the opponent outright. Fifteen 6-inch guns put far more shells into that short engagement than a typical nine-gun American heavy cruiser. That volume compensated for the smaller shell by increasing the chance of disabling exposed systems during a brief contact. The concept extended an approach already visible in the twelve-gun Omaha class, while adapting it to a much more coherent treaty-era hull. A possible Omaha-style 53-calibre successor gun offers an intriguing counterfactual, although development time would have constrained any such change.