A very fast battlecruiser with 6-16in guns

I am still experimenting with 1921-style very fast battlecruisers. This version has a 11in belt and 4in deck, with a 36-knot speed. The hull is flush decked and has a transom stern. This is the Springsharp report:

GB/CB/1921, Great Britain Battlecruiser laid down 1921 (Engine 1933)

Displacement:
 42,083 t light; 43,715 t standard; 45,800 t normal; 47,468 t full load

Dimensions: Length overall / water x beam x draught
 870.15 ft / 867.00 ft x 108.00 ft x 31.00 ft (normal load)
 265.22 m / 264.26 m x 32.92 m  x 9.45 m

Armament:
      6 - 16.00" / 406 mm guns (2x3 guns), 2,048.00lbs / 928.96kg shells, 1921 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, all forward, 1 raised mount - superfiring
      16 - 5.50" / 140 mm guns (8x2 guns), 83.19lbs / 37.73kg shells, 1921 Model
   Quick firing guns in turrets (on barbettes)
   on side, all aft
      6 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1921 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
      24 - 1.57" / 40.0 mm guns (6x4 guns), 2.00lbs / 0.91kg shells, 1921 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread
 Weight of broadside 13,978 lbs / 6,341 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 11.0" / 279 mm 450.00 ft / 137.16 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 8.00" / 203 mm 450.00 ft / 137.16 m 8.00 ft / 2.44 m
   Main Belt covers 80 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  2.00" / 51 mm 450.00 ft / 137.16 m 31.00 ft / 9.45 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 13.0" / 330 mm 8.00" / 203 mm  13.0" / 330 mm
 2nd: 5.00" / 127 mm 5.00" / 127 mm  5.00" / 127 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 13.00" / 330 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 270,222 shp / 201,586 Kw = 36.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 3,754 tons

Complement:
 1,564 - 2,034

Cost:
 £10.291 million / $41.163 million

Distribution of weights at normal displacement:
 Armament: 1,747 tons, 3.8 %
 Armour: 12,818 tons, 28.0 %
    - Belts: 3,048 tons, 6.7 %
    - Torpedo bulkhead: 1,032 tons, 2.3 %
    - Armament: 3,334 tons, 7.3 %
    - Armour Deck: 5,045 tons, 11.0 %
    - Conning Tower: 359 tons, 0.8 %
 Machinery: 7,874 tons, 17.2 %
 Hull, fittings & equipment: 19,644 tons, 42.9 %
 Fuel, ammunition & stores: 3,717 tons, 8.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   62,115 lbs / 28,175 Kg = 30.3 x 16.0 " / 406 mm shells or 7.8 torpedoes
 Stability (Unstable if below 1.00): 1.10
 Metacentric height 6.8 ft / 2.1 m
 Roll period: 17.4 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.57
 Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
 Hull has a flush deck
   and transom stern
 Block coefficient: 0.552
 Length to Beam Ratio: 8.03 : 1
 'Natural speed' for length: 34.00 kts
 Power going to wave formation at top speed: 57 %
 Trim (Max stability = 0, Max steadiness = 100): 52
 Bow angle (Positive = bow angles forward): 5.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  36.00 ft / 10.97 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (50 %):  28.00 ft / 8.53 m
    - Quarterdeck (15 %): 28.00 ft / 8.53 m
    - Stern:  28.00 ft / 8.53 m
    - Average freeboard: 28.64 ft / 8.73 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 103.9 %
  - Above water (accommodation/working, high = better): 232.5 %
 Waterplane Area: 68,179 Square feet or 6,334 Square metres
 Displacement factor (Displacement / loading): 108 %
 Structure weight / hull surface area: 204 lbs/sq ft or 998 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.43
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent