Crew demands of twin 135 mm and 5.25-inch mounts

How did crew requirements compare between the Italian twin 135 mm mount and the British twin 5.25-inch mount?

The diagrams suggest roughly twelve people in either gunhouse, but the available figures do not establish comparable totals including magazine crews.

Gunhouse crews must be distinguished from the personnel handling ammunition below. Diagrams suggest roughly twelve people in each Italian twin 135 mm and British twin 5.25-inch mount, but this is a provisional count. Power ramming is offered as the reason both could use fewer men in the gunhouse than the twenty associated with a 5-inch/38 mount. Comparable personnel figures for both systems were unavailable, so the estimate cannot establish total manpower including the magazines.