The video compares carrier numbers with the logic behind maintaining several ballistic-missile submarines: one ship can be deployed while another is ready to replace it and another is in refit. Four hulls also make air groups, specialist crews, and career structures more sustainable by reaching a useful critical mass. Three ships can be made to work with careful personnel management, while higher multiples make skills and availability progressively easier to maintain. Dependable force generation mattered more than the size of any individual ship.
Notable Point · 8:48-10:31
Why four carriers mattered for availability
A four-carrier force creates the refit, relief, and trained-crew depth needed to keep a capital ship available.