Why Napoleon could not simply build past Trafalgar

Could Napoleon's post-Trafalgar shipbuilding program overwhelm the Royal Navy with numbers?

No. Orders alone could not supply the money, yards, seasoned timber, or sea experience needed to overcome British strength.

Building orders required funding, suitable yards, and seasoned timber before they could produce usable ships. Napoleon lacked the means to turn every ambitious order into a finished vessel. British captures also transferred French-built ships to the Royal Navy, adding enemy construction to Britain's own output. British crews spent more time at sea and were better placed to fight when French ships emerged. Replacing hulls alone could not remove that practical advantage.