A four-ship force can sustain one deployed ship

How much maintenance support does it take to keep four ships operating?

It depends on readiness goals; sustaining one ship continuously on station can occupy the other three in transit, work-up, and refit, demanding substantial crews, supplies, and facilities.

The maintenance burden cannot be stated without defining the operating tempo expected from the force. A demanding four-ship cycle keeps one deployed, one traveling to or from station, one preparing, and one in refit. That model extracts more presence from the class but requires more people, supplies, and shore facilities.