British dockyards and the limits of giant warships

Could Oceanic indicate that Britain intended its dockyards eventually to handle ships of roughly 80,000 tons?

Probably; continued six-year infrastructure upgrades could plausibly have raised capacity from about 60,000 tons toward 80,000 and beyond, although the projection is hypothetical.

Ship size becomes an infrastructure problem before it becomes a design problem. A hypothetical sequence of six-year improvement cycles raises British capacity from roughly 60,000 tons toward 80,000, 100,000, and eventually 120,000 tons. Oversized slips and docks would not have to sit idle between giant projects because several smaller vessels could use the same space. Sustained infrastructure spending might also soften some effects of the Great Depression, although both that economic benefit and the enormous ship sizes remain counterfactual. Warship ambition in this scenario depends on long-term investment, industrial flexibility, and a willingness to keep paying for capacity.