More modest hulls improve force generation

The rule-of-three example links procurement quantity directly to ships available for operations: twelve hulls can normally sustain roughly four deployments, whereas six sustain about two. As class size grows, training and maintenance cycles can sometimes generate additional ships on call beyond that conservative baseline. Larger classes also gain resilience because a fire or extended refit is easier to absorb across 24 hulls than six. Simpler patrol and sloop-like ships further improve force generation by carrying fewer complex systems whose failure can prevent deployment.