Austro-Hungarian Project VI Battlecruiser Design

This was the final battlecruiser proposal by the MTK (Marinetechnische Komitee - Naval Technical Committee), Pola offered in late 1917, early 1918. It was a further improvement on the previous Project IV type with another step taken in a larger main weapon calibre: the 42cm sized cannons. These weapons first appeared on the Imperial German navy post Jutland battleship and battlecruiser (The Grosskreuzer) designs planned for the post war fleet of Germany as well.
The two twin turret layout while reminiscent of the British Courageous class light battlecruisers this design share more similarities with the Gk 4021 and 4221 designs of the Imperial German Navy which too had the same armament but due to being faster (32knots) and would carry thicker armour of 80mm deck and 320mm belt but this resulted in a 40-42.000ton displacement some 10.000tons heavier than their Austrian counterparts!

The hull too further refined and adjusted for the heavy twin 42cm gun turrets, while the DP-AA guns moved towards the centre of the ship, further away from the blast area of the main turrets

The design(s) had the following characteristics:
Dimensions: 230 (wl) x 29 x 8,82m
Displacement: 32.000tons (standard), 36.000tons (full load)
Armour: 40mm Deck, 225mm Belt
Engines: 112.000shp Steam Turbines, 4 shafts
Speed: 56km/h (30knots)
Range: 16.700km at 28km/h (9.000nm at 15knots) or
5.500km at 56km/h (3.000nm at 30knots)
Armaments: 
2x2 42cm/45 Skoda K18 Cannons
18x1 15cm/50 Skoda K10 Guns
4x1 15cm/50 Skoda K18 DP-AA Guns
6x1 53cm Underwater Torpedo tubes

The original drawings can be found here:
www.viribusunitis.ca/prelimina…
www.viribusunitis.ca/bb-bc-pre…

Or here together with a small history on them:
stefsap.wordpress.com/2017/12/…

As a side note:
While the British were the first to build battlecruisers with such minimal main armament, the Japanese designed a similar vessel with 3 and later 4 single 30cm gun turrets, I've mentioned the German Grosskreuzer series of 1916-17, but on the other side of the Atlantic Ocean the USN too played with the idea but they called this vessel a battle scout.
Also note that the Royal Navy's Courageous and Furious classes were designed for the Baltic Sea to provide fire support for the abortive Baltic amphibious operations and thus were very lightly armoured for minimal displacement and thus shallow draught, while the German and Austro-Hungarian proposal were true battlecruisers with thicker armour and heavier secondary armament ideal for fleet action or lone hunting duties!

And finally based on the naming conventions of the German and Austro-Hungarian navies, the name of the class most likely be Ersatz Kaiser Karl or Ersatz Maria Theresia the two oldest armoured cruisers of the KuK navy.