Was Renown firing full broadsides or alternating half-salvos?

Was Renown firing full broadsides, or alternating half-salvos between corrections?

Probably alternating three-gun half-salvos, mainly from the forward turrets with the aft turret bearing when the geometry allowed.

Dividing Renown's 230 fifteen-inch rounds by six guns gives roughly thirty-eight full-broadside equivalents. If she instead alternated three-gun groups between spotting corrections, the action represents about seventy-six half-salvos. The forward turrets likely did most of the work during the chase. Course angles nevertheless allowed the aft turret to bear at points, so the engagement was not simply a bow-on firing problem. Renown sustained a higher heavy-shell output than either German ship even though her forward turrets probably did most of the firing.