An anachronistic Defence class armoured cruiser

this is my attempt to render a 1988 anachronistic drawing of Defence class armoured cruisers with a late 1930's look to them. The armour basis is 6in with a 2in deck. The speed is a standard 23 knots witha coal-fired boilers and very lightweight machinery. The armament is carried in two twin 9.2in turrets, two triple 7.5in gun turrets in supefiring position, and two twin 7.5in turrets on the side. There are also 8 twin 3in QF gun mounts. This is the Springsharp report:

Defence class (anachronistic), Great Britain Armoured Cruiser laid down 1912 (Engine 1908)

Displacement:
 12,757 t light; 13,337 t standard; 14,900 t normal; 16,150 t full load

Dimensions: Length overall / water x beam x draught
 520.84 ft / 520.00 ft x 75.00 ft x 24.00 ft (normal load)
 158.75 m / 158.50 m x 22.86 m  x 7.32 m

Armament:
      4 - 9.20" / 234 mm guns (2x2 guns), 389.34lbs / 176.60kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      6 - 7.50" / 191 mm guns (2x3 guns), 210.94lbs / 95.68kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, all raised mounts
      4 - 7.50" / 191 mm guns (2x2 guns), 210.94lbs / 95.68kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on side, all amidships, all raised mounts - superfiring
      16 - 3.00" / 76.2 mm guns (8x2 guns), 13.50lbs / 6.12kg shells, 1912 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread, all raised mounts
 Weight of broadside 3,883 lbs / 1,761 kg
 Shells per gun, main battery: 120

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 350.00 ft / 106.68 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 104 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 350.00 ft / 106.68 m 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 6.00" / 152 mm 4.00" / 102 mm  6.00" / 152 mm
 2nd: 5.00" / 127 mm 3.00" / 76 mm  5.00" / 127 mm
 3rd: 5.00" / 127 mm 3.00" / 76 mm  5.00" / 127 mm
 4th: 2.00" / 51 mm 1.00" / 25 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Coal fired boilers, complex reciprocating steam engines, 
 Direct drive, 2 shafts, 32,706 ihp / 24,399 Kw = 23.00 kts
 Range 4,700nm at 14.00 kts
 Bunker at max displacement = 2,814 tons (100% coal)

Complement:
 673 - 876

Cost:
 £1.270 million / $5.082 million

Distribution of weights at normal displacement:
 Armament: 485 tons, 3.3 %
 Armour: 3,796 tons, 25.5 %
    - Belts: 1,443 tons, 9.7 %
    - Torpedo bulkhead: 311 tons, 2.1 %
    - Armament: 950 tons, 6.4 %
    - Armour Deck: 1,014 tons, 6.8 %
    - Conning Tower: 78 tons, 0.5 %
 Machinery: 2,973 tons, 20.0 %
 Hull, fittings & equipment: 5,502 tons, 36.9 %
 Fuel, ammunition & stores: 2,143 tons, 14.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   17,727 lbs / 8,041 Kg = 45.5 x 9.2 " / 234 mm shells or 2.7 torpedoes
 Stability (Unstable if below 1.00): 1.16
 Metacentric height 4.3 ft / 1.3 m
 Roll period: 15.3 seconds
 Steadiness - As gun platform (Average = 50 %): 73 %
   - Recoil effect (Restricted arc if above 1.00): 0.54
 Seaboat quality  (Average = 1.00): 1.46

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.557
 Length to Beam Ratio: 6.93 : 1
 'Natural speed' for length: 22.80 kts
 Power going to wave formation at top speed: 49 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  24.00 ft / 7.32 m
    - Forecastle (20 %): 19.00 ft / 5.79 m
    - Mid (50 %):  19.00 ft / 5.79 m
    - Quarterdeck (15 %): 19.00 ft / 5.79 m
    - Stern:  19.00 ft / 5.79 m
    - Average freeboard: 19.40 ft / 5.91 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 122.7 %
  - Above water (accommodation/working, high = better): 147.3 %
 Waterplane Area: 27,401 Square feet or 2,546 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 136 lbs/sq ft or 665 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.65
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily