Could Renown and Repulse have triple turrets in this faster British fleet?
Short answerYes, in the counterfactual they could retain three triple turrets and gain speed through a longer hull with more machinery space.
NotesStarting with a design already capable of 28 knots changes the route to a faster Renown or Repulse. Lengthening the hull would provide room for more machinery. The ship could retain three triple turrets instead of sacrificing another turret to gain speed.