Why 30 knots could matter for future battleships

Could Britain realistically build 30-knot battleships after this war?

It would be expensive and require hull and machinery tradeoffs, but a modest speed increase could be worthwhile for range and battlecruiser countering.

The viewer contrasts the large machinery increase needed to move a capital ship from about 29 to 32 knots. A more modest 30-knot target would avoid trying to match the fastest battlecruisers. That extra knot would let the future battleship answer battlecruiser-like threats while the Royal Navy retired its separate battlecruiser category. King George V had been designed at roughly 29 knots as a replacement for the slower R class, so the proposed change is evolutionary rather than a demand for Hood's full speed. One knot remains operationally meaningful even though it carries real machinery and hull costs.