Likely one of the hydrogen peroxide (Ingolin-Antreib) turbine designs, I think, or a Kreislauf design of some sort.
Tirpitz uses the same open quad as most other German ships. I'll see if I can find a diagram for you.
The Graf Zeppelin at some stage in its design process was intended to have 3 such turrets. It's the only purpose I can think of, besides export to the Soviet Union, because KM basically abandoned the heavy cruiser concept after the Hipper class.
The '31 version or '38? @ceccherini is correct that Graf Zeppelin have several preliminaries due to German observation on 8" guns on Akagi and Lexington, so they came up with 8 inch gun armed "carrier cruiser" type (fitted into either casemate, twin or triple turrets).
That's the best print you can get from Breyer, am afraid some of them remain locked in invenio, most digitalized, least public plan, prints and sketches are H-39 and H-40a/b.
Aside from these Graf Zeppelin prelims? Not that I am aware of. There is no known Hipper prelim or successor that uses them either. I believe it's largely just a study.
Check the thread's previous pages
I found these in a chinease social media post that a previous user provided as the source for the triple 406's. They seems to be aircraft carrying cruisers armed with triple 203mm turrets
But I thought in dual gun turret. I saw these triple and quadruple gun turrets.
I'm no naval expert but it seems like this thing hull shapes seems to resemble Japanease Destroyers and Light Cruiser rather than a German Heavy Cruiser
There's at least one thread about this somewhere in this subforum. IIRC, it was an unsolicited proposal by a third party.
These types of proposals were common, although certainly many such plans no longer exist or are in private archives.
No, they have not been digitized yet.
Graf Zeppelin prints shouldn't hard to be find, use this site while you can (Russian forums and archive is legitimate gold mine for never-were parts), also Invenio have tp take years and years to digitalize, best not to rely on it.
Ah, the one, we stumbled upon the unknown aircraft ten years ago!
Going to have to agree. Almost certainly the He 45.
