Why carrier shipbuilding capacity cannot simply be multiplied

Complex warships impose physical limits on how many people and tasks can occupy a hull at once. Piping, power, machinery, and later nuclear systems must be fitted in a workable sequence, so large ships take time even in a capable industrial system. A country can increase total output by employing more yards, but concentrating rare skills in centres of excellence tends to preserve long individual build timelines. The loss of the Black Sea Shipyard shows how losing one such concentration of infrastructure can damage a carrier programme for decades.