How difficult would it be to restart Type 12 frigate and twin 4.5-inch mount production?
Short answerEffectively impossible as a direct restart; designing a new back-to-basics frigate would be more practical.
NotesThe old jigs, supply chain, and production knowledge are no longer a usable industrial base. A deliberately simple new frigate would be easier to create, while Type 31 remains a capable general-purpose presence ship rather than a truly minimal escort.