Definitely the kind of information that should be public knowledge. /s
It’s not horrifically out of the ordinary. Certainly around WW1/WW2, you could expect 1/3ish of a fleet to be out of action at any one time, due to maintenance/working up/breaking in new crew. I can’t assume a nuclear fleet improves that too much
One current example of the extreme backlog is the USS Connecticut, one of three premier Seawolf-class submarines. It struck an underwater mountain in the South China Sea 20 months ago and won’t be back in service until early 2026 at the soonest.
The best year for attack sub availability was fiscal 2015 when 19% — or 10 of the then 53 subs — were in overhaul,
https://gcaptain.com/nearly-40-of-us-attack-submarines-are-out-of-commission-for-repairs/
Probably need to see if Trump waived this information around. /s