My concept for a fast battlecruiser with 10-15in guns

The GB/CB/1921 design study is my current concept for what a fast, lightly armoured battlecruiser should be. This is a flush-decked ship with a flared bow and a wide transom stern. The main armament is in two quadruple turrets and one superfiring twin turret. The armour is all-or-nothing style, but only a 5in inclined belt. I thought that the ship needed a 33 knot speed. This is the Springsharp report:

GB/CB/1921, Great Britain Battlecruiser laid down 1921 (Engine 1950)

Displacement:
 32,346 t light; 34,134 t standard; 36,346 t normal; 38,115 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (813.39 ft / 800.00 ft) x 102.00 ft x (28.50 / 29.55 ft)
 (247.92 m / 243.84 m) x 31.09 m  x (8.69 / 9.01 m)

Armament:
      10 - 15.00" / 381 mm 45.0 cal guns - 1,950.00lbs / 884.51kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts, 1921 Model
   2 x Quad mounts on centreline ends, evenly spread
   1 x Twin mount on centreline, forward deck centre
  1 raised mount
      16 - 5.00" / 127 mm 50.0 cal guns - 65.00lbs / 29.48kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts, 1921 Model
   8 x Twin mounts on sides, evenly spread
  4 raised mounts
      Weight of broadside 20,540 lbs / 9,317 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 5.00" / 127 mm 445.00 ft / 135.64 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 86 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  4.00" / 102 mm 445.00 ft / 135.64 m 28.50 ft / 8.69 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 7.00" / 178 mm 5.00" / 127 mm  7.00" / 178 mm
 2nd: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Armoured deck - multiple decks: 3.00" / 76 mm For and Aft decks
 Forecastle: 3.00" / 76 mm  Quarter deck: 3.00" / 76 mm

   - Conning towers: Forward 7.00" / 178 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 171,431 shp / 127,887 Kw = 33.00 kts
 Range 6,500nm at 17.00 kts
 Bunker at max displacement = 3,980 tons

Complement:
 1,316 - 1,711

Cost:
 £8.667 million / $34.669 million

Distribution of weights at normal displacement:
 Armament: 3,079 tons, 8.5 %
 Armour: 8,859 tons, 24.4 %
    - Belts: 1,656 tons, 4.6 %
    - Torpedo bulkhead: 1,877 tons, 5.2 %
    - Armament: 1,853 tons, 5.1 %
    - Armour Deck: 3,308 tons, 9.1 %
    - Conning Tower: 165 tons, 0.5 %
 Machinery: 4,101 tons, 11.3 %
 Hull, fittings & equipment: 16,307 tons, 44.9 %
 Fuel, ammunition & stores: 4,000 tons, 11.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   53,072 lbs / 24,073 Kg = 31.5 x 15.0 " / 381 mm shells or 8.2 torpedoes
 Stability (Unstable if below 1.00): 1.20
 Metacentric height 7.2 ft / 2.2 m
 Roll period: 16.0 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.80
 Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
 Hull has a flush deck,
   an extended bulbous bow and large transom stern
 Block coefficient (normal/deep): 0.547 / 0.553
 Length to Beam Ratio: 7.84 : 1
 'Natural speed' for length: 32.74 kts
 Power going to wave formation at top speed: 55 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 17.00 degrees
 Stern overhang: 3.00 ft / 0.91 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 20.00 %,  34.00 ft / 10.36 m,  27.00 ft / 8.23 m
    - Forward deck: 30.00 %,  27.00 ft / 8.23 m,  23.00 ft / 7.01 m
    - Aft deck: 35.00 %,  23.00 ft / 7.01 m,  23.00 ft / 7.01 m
    - Quarter deck: 15.00 %,  23.00 ft / 7.01 m,  23.00 ft / 7.01 m
    - Average freeboard:  24.96 ft / 7.61 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 98.4 %
  - Above water (accommodation/working, high = better): 204.7 %
 Waterplane Area: 59,118 Square feet or 5,492 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 213 lbs/sq ft or 1,041 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.46
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent