Concentrating the main battery forward offers a gunnery benefit separate from hull weight and firing arcs. The grouped guns send their shells toward the target in a tighter visual concentration. Closely arriving splashes can make it easier to see whether the main battery is straddling or missing. Turret arrangement can therefore affect how observers interpret fall of shot as well as the ship's theoretical broadside.
Notable Point · 26:44-27:01
Concentrated salvos make fall of shot easier to read
An all-forward main battery groups shell splashes closely, helping observers distinguish a concentrated salvo around the target.