In addition to ace's comments, I'd like to point out that even in the late stages of World War Two (1945), the Flakgerat 58 was only an experimental weapon, and did not even have a functioning prototype.
https://i.imgur.com/nZaKohA.png A Counter To The Silence: HMNES Arbalest Laid down in 1943 to lead destroyer squadrons, the four sisters of the Artemis class were standard, if heavy, 4.7" gun cruisers. Weighing in at 8,100t as designed, they faced numerous delays, mostly due to production being foc...
Neither the Kaiserliche Marine, Reichsmarine, or Kriegsmarine used pennant numbers for their capital ships, so I'm not entirely sure where you're getting the CVE designation, as that was a primarily US practice. Additionally, only the Kaiserliche Marine used a prefix (SMS), and using "KM" as a prefi...