A very large heavy cruiser design: US/CA/1941

This is a very large heavy cruiser design meant to accompany the very large battleships and battlecruisers. The armament is 9-10in and 16-5.1in DP guns, with 56-4omm AA guns. The belt is 8in with a 4in deck. This design is large enough to include a 1.5in A/T bulkhead. The speed is aggresive at 35 knots maximum with 15 knots cruising speed. To make the design work, I reduced the range to 10,000 miles from my originally intended 12,000 miles. My designation is "US/CA/1941 Large". This is the Springsharp report:

US/CA/1941 large, United States Heavy Cruiser laid down 1941 (Engine 1945)

Displacement:
 26,053 t light; 27,135 t standard; 29,310 t normal; 31,049 t full load

Dimensions: Length overall / water x beam x draught
 768.78 ft / 765.00 ft x 85.00 ft x 29.00 ft (normal load)
 234.32 m / 233.17 m x 25.91 m  x 8.84 m

Armament:
      9 - 10.00" / 254 mm guns (3x3 guns), 500.00lbs / 226.80kg shells, 1941 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, all raised mounts - superfiring
      16 - 5.10" / 130 mm guns (8x2 guns), 66.33lbs / 30.08kg shells, 1941 Model
   Dual purpose guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
      56 - 1.57" / 40.0 mm guns (14x4 guns), 1.95lbs / 0.89kg shells, 1941 Model
   Breech loading guns in deck mounts 
   on side ends, evenly spread, all raised mounts - superfiring
 Weight of broadside 5,671 lbs / 2,572 kg
 Shells per gun, main battery: 150

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 8.00" / 203 mm 530.00 ft / 161.54 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 107 % of normal length

   - Torpedo Bulkhead:
  1.50" / 38 mm 530.00 ft / 161.54 m 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 10.0" / 254 mm 6.00" / 152 mm  8.00" / 203 mm
 2nd: 2.00" / 51 mm       -         -

   - Armour deck: 4.00" / 102 mm, Conning tower: 8.00" / 203 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 219,630 shp / 163,844 Kw = 35.00 kts
 Range 10,000nm at 15.00 kts
 Bunker at max displacement = 3,914 tons

Complement:
 1,119 - 1,456

Cost:
 £14.118 million / $56.471 million

Distribution of weights at normal displacement:
 Armament: 709 tons, 2.4 %
 Armour: 8,547 tons, 29.2 %
    - Belts: 2,826 tons, 9.6 %
    - Torpedo bulkhead: 706 tons, 2.4 %
    - Armament: 1,511 tons, 5.2 %
    - Armour Deck: 3,339 tons, 11.4 %
    - Conning Tower: 164 tons, 0.6 %
 Machinery: 5,546 tons, 18.9 %
 Hull, fittings & equipment: 11,251 tons, 38.4 %
 Fuel, ammunition & stores: 3,256 tons, 11.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   40,469 lbs / 18,356 Kg = 80.9 x 10.0 " / 254 mm shells or 5.1 torpedoes
 Stability (Unstable if below 1.00): 1.08
 Metacentric height 4.6 ft / 1.4 m
 Roll period: 16.7 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.59
 Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.544
 Length to Beam Ratio: 9.00 : 1
 'Natural speed' for length: 27.66 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: 2.00 ft / 0.61 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): 105.6 %
  - Above water (accommodation/working, high = better): 199.7 %
 Waterplane Area: 45,126 Square feet or 4,192 Square metres
 Displacement factor (Displacement / loading): 116 %
 Structure weight / hull surface area: 159 lbs/sq ft or 774 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.38
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent