The balance of cost, firepower, crew, and sustainment made the third rate ubiquitous. A navy operating in the Mediterranean, Atlantic, Indian Ocean, and elsewhere needs enough ships to cover widely separated commitments. Replacing the 1814 Royal Navy's first, second, and third rates with 118 first rates would preserve the hull count only at an extraordinary financial and logistical cost. The thought experiment demonstrates why global presence, rather than the specification of one ship, is the correct scale for judging force design.
Notable Point · 44:16-45:50
A third-rate lesson for modern force design
The historical lesson is not to recreate ship ratings, but to meet global commitments with enough capable ships rather than an unaffordable fleet of prestige vessels.