Moving to turbines really helps the "Ideal Battleship"

By changing the machinery to steam turbines, my expansive version of Colonel Cuniberti's "Ideal Battleship" is greatly helped. The displacement can be considerably reduced, still with the expansive dimensions. This is a photograph of the larger design:

I will probably do one or more tweaks to see what other improvements I can make, but this is the turbine-powered, coal-fired boiler version that can make 24 knots with a complete 12in belt:

Ideal Battleship-Modified, Great Britain Battleship laid down 1905 (Engine 1909)

Displacement:
 22,637 t light; 23,691 t standard; 26,173 t normal; 28,159 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (603.00 ft / 589.00 ft) x 87.00 ft x (29.50 / 31.34 ft)
 (183.79 m / 179.53 m) x 26.52 m  x (8.99 / 9.55 m)

Armament:
      8 - 12.00" / 305 mm 45.0 cal guns - 871.37lbs / 395.24kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts , 1905 Model
   2 x Twin mounts on centreline ends, evenly spread
   2 x Twin mounts on sides, forward deck aft
  2 double raised mounts
      4 - 12.00" / 305 mm 45.0 cal guns - 871.37lbs / 395.24kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts , 1905 Model
   4 x Single mounts on sides, evenly spread
      12 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 90 per gun
   Quick firing guns in casemate mounts , 1905 Model
   12 x Single mounts on sides, evenly spread
  12 hull mounts in casemates- Limited use in heavy seas
 Weight of broadside 10,620 lbs / 10,620 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 12.0" / 305 mm 350.00 ft / 106.68 m 8.00 ft / 2.44 m
 Ends: 12.0" / 305 mm 239.00 ft / 72.85 m 8.00 ft / 2.44 m
 Upper: 12.0" / 305 mm 230.00 ft / 70.10 m 8.00 ft / 2.44 m
   Main Belt covers 91 % of normal length

   - Torpedo Bulkhead:
  1.50" / 38 mm 350.00 ft / 106.68 m 29.50 ft / 8.99 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 12.0" / 305 mm 7.00" / 178 mm  12.0" / 305 mm
 2nd: 12.0" / 305 mm 7.00" / 178 mm  12.0" / 305 mm
 3rd: 6.00" / 152 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 12.00" / 305 mm

Machinery:
 Coal fired boilers, steam turbines, 
 ERROR: Revise drives, 4 shafts, 53,337 shp / 39,790 Kw = 24.00 kts
 Range 5,200nm at 14.00 kts
 Bunker at max displacement = 4,468 tons (100% coal)

Complement:
 1,028 - 1,337

Cost:
 £2.150 million / $8.600 million

Distribution of weights at normal displacement:
 Armament: 2,031 tons, 7.8 %
 Armour: 8,963 tons, 34.2 %
    - Belts: 3,434 tons, 13.1 %
    - Torpedo bulkhead: 573 tons, 2.2 %
    - Armament: 3,334 tons, 12.7 %
    - Armour Deck: 1,394 tons, 5.3 %
    - Conning Tower: 228 tons, 0.9 %
 Machinery: 2,667 tons, 10.2 %
 Hull, fittings & equipment: 9,835 tons, 37.6 %
 Fuel, ammunition & stores: 3,537 tons, 13.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   35,748 lbs / 16,215 Kg = 41.4 x 12.0 " / 305 mm shells or 5.8 torpedoes
 Stability (Unstable if below 1.00): 1.02
 Metacentric height 4.2 ft / 1.3 m
 Roll period: 17.7 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.83
 Seaboat quality  (Average = 1.00): 1.15

Hull form characteristics:
 Hull has raised forecastle,
   a ram bow and a round stern
 Block coefficient (normal/deep): 0.606 / 0.614
 Length to Beam Ratio: 6.77 : 1
 'Natural speed' for length: 24.27 kts
 Power going to wave formation at top speed: 50 %
 Trim (Max stability = 0, Max steadiness = 100): 47
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: 6.00 ft / 1.83 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 8.00 %,  28.00 ft / 8.53 m,  28.00 ft / 8.53 m
    - Forward deck: 30.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
    - Aft deck: 47.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
    - Quarter deck: 15.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
    - Average freeboard:  20.64 ft / 6.29 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 87.4 %
  - Above water (accommodation/working, high = better): 139.7 %
 Waterplane Area: 37,689 Square feet or 3,501 Square metres
 Displacement factor (Displacement / loading): 111 %
 Structure weight / hull surface area: 180 lbs/sq ft or 877 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.52
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent