King George V inside Washington's immunity zone

Could King George V enter Washington's immunity zone while remaining inside her own?

To an extent; protection and modern 14-inch performance make the fight viable, though the American 16-inch gun retains greater power.

King George V could close toward Washington while remaining protected over part of the approach. The American 16-inch shell is more powerful, but the British 14-inch weapon was still a modern heavy gun rather than the weak armament sometimes implied by calibre comparisons. Rate of fire, shell construction, metallurgy, and barrel performance all complicate a simple 14-versus-16-inch verdict. King George V's extra protection therefore compensates to a meaningful extent for the smaller calibre. A standardised improved 15-inch British gun remains the preferred long-term balance.