I've seen those before on my searches through Bundesarchiv Invenio.
Or how about a 15cm/55 in a triple?
Totally new for me, amazing finding, thank you so much. The twin turrets drawing seems to show a 48 cm L45 gun.
NGA posters said is 53cm/L45, the rest are 40cm/L52 guns in various quad turrets.
I thought those were 38cm quadruples?
Gun length is shown to be 21,25 meters, 21,25/45= 0,47222. The closest gun envisioned in a German battleship is a 48 cm so I assume the gun in the twin turret drawing is actually a 48 cm L44
That sounds more realistic.
The barrels are shorter? Hmm. Probably 35cm, a caliber experimented with.
I have heard rumors that Hitler demanded Schlachtschiff N carry triple 15" turrets if the quad 16" on the H class were ineffective. However I have not seen any sources to corroborate this as of now, even when going through all of the naval affairs conferences with Hitler which were published in Brassey's Naval Annual 1948. Obviously it does not rule out this supposed request, of course.
Well ，the gun length in that picture is with out breech·····
You're right, I've reach the very same conclusion because the barbette diameter of the quadruple turret drawings is far too great even by German standard to be for 38 cm or 35 cm guns. Those are 40,6 cm guns and so the twin turret must be also armed with something larger than a 48 cm gun because is reasonable to assume that all the drawings measured the gun length in the same manner. Also 1938 is the design year of the Gerät 36 53 cm gun, so I'm inclined to believe 21" gun are shown. My guess is the drawings are referred to private krupp studies on the possibility of upgunning the H39 as Hitler demanded from the very beginning of the design. I remember Hitler pushed on larger guns, Reader on more 16", the drawings seems to reflect this confrontation. Ultimately, as the priority shift to get all 6 ship before the planned start date of the next major war, H39 emerged as underarmed and underarmored giants.
I believe Germans measured the caliber length of their guns on an overall measurement compared to other countries which did it on barrel length. So 23.96/45 does equal 0.53 or 53 which would indicate 53cm based on the established formula. Same for the quads with the 21.126 meter guns which equal .406 or 40.6(cm).
Not quite sure because the Gerat 36 is still a /52-caliber weapon...but I can't rule out the possibility that this is just a cut-down variant to /45. There aren't just an unending amount of 53cm guns in German service after all. So...I agree!
A 50cm gun...the 50.8cm, or an entirely different project?
the 50,8 cm is just a conversion from 20" made in anglosaxon literature, european navy mostly use metric system and the "about 20"" german naval gun has always been a 50 cm weapon
149 mm doesn't round in inches, still no reason to built a 508 or 20" mm gun. Also 149 mm artillery caliber goes back to mid to late XIX century in army use but nearly all the gun caliber developed after circa 1900 were rounded to half a centimeter. Gerat 36 at 533 mm or 21" and the 406 mm sk/c43 are two of the few exceptions, the former an experimental weapon based on account of the most powerful weapon ever developed by RN and the latter was both determined by treaty and later rounded to 42 cm. As no nearly 500 mm naval gun was ever built by germans there was no reason to built a 508 mm weapon, it could be 50 cm 50,5 cm or 51 cm but why 50,8 cm?
They do have, search RM-3 going to "part 9 construction department" that's were they listed all real designs (blueprint scans, material notebook) and never-were projects, order the scans since most doesn't have digital scans available.
After a painstaking and meticulous search, I've only got a couple of iffy leads and no definite Flottenkreuzer. It's either there under a different name or unnamed entirely.
Folder RM-24 OKM / Marinewaffenamt der Reichsmarine und Kriegsmarine, i went through a bunch of them, if you looking for German dual-purpose 12.7 and 12.8cm turrets they are all in RM 24-2 (from 2/1 to 2/24 with varies of turret shape and design) RM 24-3 contains data of naval shell types.
drive.google.com
drive.google.com
I apologize, I'm working in the framework of what @Kingpin61 has already made. That's no excuse - I should be organizing, and will do so when I can find the time.And where is that folder?
I can't find it here:
and this folder is empty:Germany - Sarcasticat's Home :) - Google Drive
German Ship Plans - SARCASTICAT - Google Drive
Invenio is kind of tricky (it's down even as we speak) but I will grab the link for you when it becomes available again.
Krupp worked both before and during the war on various models of 45 cm, 50 cm and 53 cm guns and the related turrets. The 48 cm gun was probably just a token weapon for the highly academic H43 study while there were never 508 mm and 51 cm guns. The Germans never knew of the true armament of the Yamatos.
