Another Red book design: GB/CB/1915 variant

This was my attempt at a battlecruiser designed along the lines of the original Hood concept. This is a ship with 8-15in guns, 16-5.5in QF guns, 4-3in AA, and 16-2pdr AA guns. The armour basis is 8in with a 3in deck. The speed is 33 knots, although I had wanted 35 knots, back when I did the design. I was not able to use the 25.9ft draft. I had to increase the draft to 26.5ft, both for strength and seakeeping. This is the Springsharp report:

GB/CB/1915 variant, Great Britain Battlecruiser laid down 1915 (Engine 1927)

Displacement:
 36,763 t light; 38,327 t standard; 40,200 t normal; 41,698 t full load

Dimensions: Length overall / water x beam x draught
 852.38 ft / 850.00 ft x 105.00 ft x 26.50 ft (normal load)
 259.80 m / 259.08 m x 32.00 m  x 8.08 m

Armament:
      8 - 15.00" / 381 mm guns (4x2 guns), 1,687.50lbs / 765.44kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      16 - 5.50" / 140 mm guns in single mounts, 83.19lbs / 37.73kg shells, 1915 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread, 4 raised mounts
      4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1915 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread
      16 - 1.57" / 40.0 mm guns (4x4 guns), 2.00lbs / 0.91kg shells, 1915 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread
 Weight of broadside 14,917 lbs / 6,766 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 8.00" / 203 mm 560.00 ft / 170.69 m 9.00 ft / 2.74 m
 Ends: 5.00" / 127 mm 250.00 ft / 76.20 m 12.00 ft / 3.66 m
   40.00 ft / 12.19 m Unarmoured ends
 Upper: 5.00" / 127 mm 560.00 ft / 170.69 m 8.00 ft / 2.44 m
   Main Belt covers 101 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  2.00" / 51 mm 560.00 ft / 170.69 m 25.00 ft / 7.62 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 6.00" / 152 mm  8.00" / 203 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 8.00" / 203 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 212,007 shp / 158,157 Kw = 33.00 kts
 Range 5,600nm at 15.00 kts
 Bunker at max displacement = 3,372 tons

Complement:
 1,419 - 1,845

Cost:
 £5.512 million / $22.050 million

Distribution of weights at normal displacement:
 Armament: 1,865 tons, 4.6 %
 Armour: 10,538 tons, 26.2 %
    - Belts: 3,222 tons, 8.0 %
    - Torpedo bulkhead: 1,036 tons, 2.6 %
    - Armament: 2,473 tons, 6.2 %
    - Armour Deck: 3,606 tons, 9.0 %
    - Conning Tower: 202 tons, 0.5 %
 Machinery: 6,692 tons, 16.6 %
 Hull, fittings & equipment: 17,668 tons, 44.0 %
 Fuel, ammunition & stores: 3,437 tons, 8.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   54,752 lbs / 24,835 Kg = 32.4 x 15.0 " / 381 mm shells or 7.0 torpedoes
 Stability (Unstable if below 1.00): 1.17
 Metacentric height 7.3 ft / 2.2 m
 Roll period: 16.4 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.62
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.595
 Length to Beam Ratio: 8.10 : 1
 'Natural speed' for length: 29.15 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 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 %): 29.00 ft / 8.84 m
    - Mid (67 %):  29.00 ft / 8.84 m (21.00 ft / 6.40 m aft of break)
    - Quarterdeck (15 %): 21.00 ft / 6.40 m
    - Stern:  21.00 ft / 6.40 m
    - Average freeboard: 26.76 ft / 8.16 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 109.8 %
  - Above water (accommodation/working, high = better): 233.6 %
 Waterplane Area: 64,965 Square feet or 6,035 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 196 lbs/sq ft or 957 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.99
  - Longitudinal: 1.09
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent