A more normal GB/CB/1915 alternative design

I wondered what the GB/CB/1915 would be like with a more normal speed for the sort of power that I had envisioned. The answer is that just 32 knots seems reasonable. This design still requires the lightest possible machinery. This is the revised Springsharp report:

GB/CB/1915 design study, Great Britain Battlecruiser laid down 1915 (Engine 1950)

Displacement:
 34,888 t light; 36,564 t standard; 39,099 t normal; 41,127 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (855.20 ft / 850.00 ft) x 105.00 ft x (25.90 / 27.00 ft)
 (260.67 m / 259.08 m) x 32.00 m  x (7.89 / 8.23 m)

Armament:
      8 - 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, 1915 Model
   4 x Twin mounts on centreline ends, evenly spread
  2 raised mounts - superfiring
      16 - 5.50" / 140 mm 45.0 cal guns - 85.00lbs / 38.56kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts, 1915 Model
   16 x Single mounts on sides, evenly spread
  4 raised mounts
      Weight of broadside 16,960 lbs / 7,693 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 8.00" / 203 mm 565.00 ft / 172.21 m 9.00 ft / 2.74 m
 Ends: Unarmoured
 Upper: 5.00" / 127 mm 565.00 ft / 172.21 m 9.00 ft / 2.74 m
   Main Belt covers 102 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 565.00 ft / 172.21 m 25.90 ft / 7.89 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 5.00" / 127 mm  8.00" / 203 mm
 2nd: 4.00" / 102 mm 3.00" / 76 mm  4.00" / 102 mm

   - Protected 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 8.00" / 203 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 184,470 shp / 137,614 Kw = 32.00 kts
 Range 6,500nm at 18.00 kts
 Bunker at max displacement = 4,563 tons

Complement:
 1,389 - 1,807

Cost:
 £4.706 million / $18.825 million

Distribution of weights at normal displacement:
 Armament: 2,618 tons, 6.7 %
 Armour: 10,219 tons, 26.1 %
    - Belts: 2,789 tons, 7.1 %
    - Torpedo bulkhead: 1,083 tons, 2.8 %
    - Armament: 2,527 tons, 6.5 %
    - Armour Deck: 3,621 tons, 9.3 %
    - Conning Tower: 199 tons, 0.5 %
 Machinery: 4,413 tons, 11.3 %
 Hull, fittings & equipment: 17,638 tons, 45.1 %
 Fuel, ammunition & stores: 4,210 tons, 10.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   71,119 lbs / 32,259 Kg = 42.1 x 15.0 " / 381 mm shells or 10.5 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 6.8 ft / 2.1 m
 Roll period: 16.9 seconds
 Steadiness - As gun platform (Average = 50 %): 64 %
   - Recoil effect (Restricted arc if above 1.00): 0.89
 Seaboat quality  (Average = 1.00): 1.28

Hull form characteristics:
 Hull has rise forward of midbreak,
   a normal bow and a cruiser stern
 Block coefficient (normal/deep): 0.592 / 0.597
 Length to Beam Ratio: 8.10 : 1
 'Natural speed' for length: 29.15 kts
 Power going to wave formation at top speed: 52 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 8.00 degrees
 Stern overhang: -3.00 ft / -0.91 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 34.00 %,  37.00 ft / 11.28 m,  32.00 ft / 9.75 m
    - Forward deck: 33.00 %,  32.00 ft / 9.75 m,  32.00 ft / 9.75 m
    - Aft deck: 18.00 %,  24.00 ft / 7.32 m,  24.00 ft / 7.32 m
    - Quarter deck: 15.00 %,  24.00 ft / 7.32 m,  26.00 ft / 7.92 m
    - Average freeboard:  30.19 ft / 9.20 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 85.9 %
  - Above water (accommodation/working, high = better): 259.2 %
 Waterplane Area: 64,789 Square feet or 6,019 Square metres
 Displacement factor (Displacement / loading): 121 %
 Structure weight / hull surface area: 202 lbs/sq ft or 985 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.42
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily