The GB/CB/1921 "Fast" battlecruiser

I made an attempt to design a fast battlecruiser with 9-14in and 16-5.5in QF guns. The armour basis is 10in, and is armoured on the "all or nothing" principle, although the belt is not of uniform thickness. This is a flush-decked ship with a flared bow. The main armament is in triple turrets and the secondary armament is in twin turrets. This is the Springsharp report:

GB/CB/1917 Fast, Great Britain Battlecruiser laid down 1921 (Engine 1931)

Displacement:
 32,096 t light; 33,434 t standard; 35,300 t normal; 36,792 t full load

Dimensions: Length overall / water x beam x draught
 815.97 ft / 810.00 ft x 90.00 ft x 29.00 ft (normal load)
 248.71 m / 246.89 m x 27.43 m  x 8.84 m

Armament:
      9 - 13.50" / 343 mm guns (3x3 guns), 1,230.19lbs / 558.00kg shells, 1921 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority 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, evenly spread
 Weight of broadside 12,403 lbs / 5,626 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 10.0" / 254 mm 430.00 ft / 131.06 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 7.00" / 178 mm 430.00 ft / 131.06 m 8.00 ft / 2.44 m
   Main Belt covers 82 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  2.00" / 51 mm 430.00 ft / 131.06 m 27.00 ft / 8.23 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 10.0" / 254 mm 7.00" / 178 mm  10.0" / 254 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 10.00" / 254 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 218,135 shp / 162,729 Kw = 34.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 3,358 tons

Complement:
 1,286 - 1,673

Cost:
 £8.499 million / $33.996 million

Distribution of weights at normal displacement:
 Armament: 1,550 tons, 4.4 %
 Armour: 9,408 tons, 26.7 %
    - Belts: 2,555 tons, 7.2 %
    - Torpedo bulkhead: 859 tons, 2.4 %
    - Armament: 2,846 tons, 8.1 %
    - Armour Deck: 2,916 tons, 8.3 %
    - Conning Tower: 232 tons, 0.7 %
 Machinery: 6,523 tons, 18.5 %
 Hull, fittings & equipment: 14,614 tons, 41.4 %
 Fuel, ammunition & stores: 3,204 tons, 9.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   41,147 lbs / 18,664 Kg = 33.4 x 13.5 " / 343 mm shells or 4.8 torpedoes
 Stability (Unstable if below 1.00): 1.07
 Metacentric height 4.8 ft / 1.5 m
 Roll period: 17.2 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.87
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.584
 Length to Beam Ratio: 9.00 : 1
 'Natural speed' for length: 28.46 kts
 Power going to wave formation at top speed: 56 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 5.00 degrees
 Stern overhang: 3.00 ft / 0.91 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  34.00 ft / 10.36 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (50 %):  26.00 ft / 7.92 m
    - Quarterdeck (15 %): 26.00 ft / 7.92 m
    - Stern:  26.00 ft / 7.92 m
    - Average freeboard: 26.64 ft / 8.12 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 119.5 %
  - Above water (accommodation/working, high = better): 202.4 %
 Waterplane Area: 52,545 Square feet or 4,882 Square metres
 Displacement factor (Displacement / loading): 101 %
 Structure weight / hull surface area: 184 lbs/sq ft or 897 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.23
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent