The final check counts how many weapons can bear from each direction instead of stopping at the nominal gun totals. The forward and after sectors are covered by numerous six-inch guns, while the broadside can bring eighteen secondary barrels onto a target. Across roughly 270 degrees, nine 15-inch guns can also bear. Placement and firing arcs matter as much as battery size because a ship may carry many weapons that cannot all engage the same opponent.
Notable Point · 3:27:36-3:28:45
Checking main- and secondary-battery fire arcs
The finished battlecruiser is judged by how many 15-inch and six-inch guns can bear through each sector, not merely by its total battery count.