"Unfit sea" is a medical term for people, not an engineering term. The engineering term is "safe at sea" which PRO was.
As stated above by
@Stoker there was plenty that went into the PRO fire being so bad that had little to do with the state of the equipment.
I feel like we've talked about this before. ISI is starting to build CSC in 2023. It takes ~7 years to build the T26, and ~two years for trials. With a new ship coming off the line every 12-18 months (the build for ship two would have started 2019 or so, 18 months after ship one). This timing is in line with both Australia and UK builds.
HMS GLASGOW was
laid down 2017 and is expected to the RN ~2023. And their ship is much less complicated than ours from a combat systems perspective and BAE has recently built large warships. Australia is expecting their ships
to start 2022 and delivery to be 2031. They just finished building a test block but that's really just a large steel box with nothing inside.