The video considers replacing the Nelson class's 16-inch battery with 15-inch/50-calibre guns, an option discussed during design. The estimated saving from lighter guns, mountings, and ammunition is roughly 2,200 tons, which could have gone into additional speed. Such a ship might have offered greater strategic mobility, but Britain already retained Hood, Renown, Repulse, and Tiger for fast global work. The final choice can therefore be read as a decision to match other navies' 16-inch status while strengthening the slower battle line.
Notable Point · 45:10-46:18
A faster 15-inch-gun Nelson alternative
A contemporary 15-inch-gun option illustrates the trade between prestige armament and strategic speed in the Nelson design.