Well, the whole raison d'etre of a new Battlecruiser post WWI is fatally flawed; beacuse by the 20's it was acknowledged that the Battlecruiser concept was (in warship design) an evolutionary culdesac, at least in the RN. I won't rehash the endless discussions that have already gone on about Battlecruisers; but, that said, by all means forge ahead; but my advice would be to switch to a smaller 'Fast Battleship' concept for export; aimed at Latin America, Greece/Turkey, Northern Europe, Thailand etc.
Or, if you are determined, drop the Battlecruiser altogether and aim for an 'Armoured Cruiser'
A bit of backstory to help understand my reasoning. 1t is 1915. The War with the Prussian States is ongoing, but the Navy looked to add 8 ships in 2 classes of larger, more capable, warships. With that in mind, they authorize 2 classes of capital ships, The Emperor Class of four battleships in 1915
(USS Virgina - Maximum Battleship Design Tillman IV-2) and the Midguard Class of four battlecruisers in 1916
(USS Lexington Class). Design on both had already been underway, and construction began on the first Emperor in 1917 and the first Midguard in 1918. Unfotunately for these ships, the war ended in 1917 but construction continued, but at a less frenzied pace.
The elections of 1920 proved disastrous for the military and naval community, however, when the ruling Whigs were swept from power by the Labour party who had campaigned on a peace platform. They looked to be cancelling several new and expensive warships to use that money on their own projects.
Enter into the picture one Quincy Belmont, a naval tactician and loyal Labourite. He had long advocated large fleets of smaller and lighter armed capital ships to overwhealm an enemy with instead of a few big and heavily armed ships. He had the ear of several prominent members of Parliament, and was able to convince them of the correctness of his theory, mostly by pointing out the cost savings.
In 1921 Parliament cancelled 3 of the 4 Emperors, permitting only the class leader to be finished because it was the furthest along, and cancelled all 4 of the Midguards, 2 of which were saved from the breakers only because they were converted to aircraft carriers. In their place, they authorized, over Admiralty objections, 12 of the Matchless class to be built. The first, HMS Matchless, was laid down in early 1922 as Belmont already had designs drawn up. The remaining 11 were planned for 2 in 1923, 2 in 1924, 3 in 1925, and 4 in 1926.
The Admiralty fought hard against these ships, understanding the limited capabilities of them, and when the Whigs returned to power after a 'no confidence' vote in 1923, the last 7 were cancelled, and in their place a class of 4 battleships, the Iron Duke class, was authorized instead (HMS Rodney class). These were able to be more quickly built as they used turrets, armour and machinery left from the cancelled Emperors and Midguards.
Does that help with why I am looking to add this smaller, less capable class to my historical inventory?
(Also, there is no "South America" or any other of the known continents in this world. It is a completely different world from earth.)
Re the drawing, you'll need to show the armour belt, to justify the concept, so if you could show the full hull that would help there. You seem to have an awful lot of scuttles grouped together, and I wouldn't reccommend that for protection reasons. Also, the aft casement; I'm not sure it would work directly under the twin 6-in, but its hard to say without a plan view. That said, we've seen far worse so good luck
That was just kind of a "shot in the dark" for me. I didn't put much actual thought behind it, sadly. I was more going for this "[insert facepalm], Did Parliament really authorized this piece of crap?" thing.