Updated with a bit of help from Rocky.

Last 1917 design:

Kongo and Hiei

Kongo class, Japan Battlecruiser laid down 1917

Displacement:
   21,999 t light; 23,480 t standard; 25,646 t normal; 27,379 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (704.76 ft / 700.00 ft) x 90.00 ft x (27.40 / 28.82 ft)
   (214.81 m / 213.36 m) x 27.43 m  x (8.35 / 8.78 m)

Armament:
      8 - 14.00" / 356 mm 45.0 cal guns - 1,383.70lbs / 627.63kg shells, 135 per gun
     Breech loading guns in turret on barbette mounts, 1917 Model
     4 x Twin mounts on centreline, evenly spread
      2 raised mounts
      16 - 5.00" / 127 mm 45.0 cal guns - 63.03lbs / 28.59kg shells, 150 per gun
     Quick firing guns in casemate mounts, 1917 Model
     16 x Single mounts on sides, evenly spread
      8 - 5.00" / 127 mm 45.0 cal guns - 63.03lbs / 28.59kg shells, 170 per gun
     Quick firing guns in deck and hoist mounts, 1917 Model
     8 x Single mounts on sides, evenly spread
      8 raised mounts
      12 - 2.00" / 50.8 mm 45.0 cal guns - 4.03lbs / 1.83kg shells, 250 per gun
     Quick firing guns in deck mounts, 1917 Model
     4 x Triple mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 12,631 lbs / 5,729 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.00" / 229 mm   440.00 ft / 134.11 m   14.00 ft / 4.27 m
   Ends:   Unarmoured
     Main Belt covers 97 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.40" / 36 mm   440.00 ft / 134.11 m   24.00 ft / 7.32 m
   Beam between torpedo bulkheads 74.00 ft / 22.56 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.00" / 229 mm   5.00" / 127 mm      9.00" / 229 mm
   2nd:   2.00" / 51 mm         -               -
   3rd:   1.00" / 25 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 2.40" / 61 mm

   - Conning towers: Forward 9.00" / 229 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 75,403 shp / 56,251 Kw = 27.00 kts
   Range 9,000nm at 14.00 kts
   Bunker at max displacement = 3,899 tons

Complement:
   1,013 - 1,317

Cost:
   £4.160 million / $16.640 million

Distribution of weights at normal displacement:
   Armament: 2,200 tons, 8.6 %
      - Guns: 2,200 tons, 8.6 %
   Armour: 6,270 tons, 24.4 %
      - Belts: 2,356 tons, 9.2 %
      - Torpedo bulkhead: 547 tons, 2.1 %
      - Armament: 1,789 tons, 7.0 %
      - Armour Deck: 1,408 tons, 5.5 %
      - Conning Tower: 169 tons, 0.7 %
   Machinery: 2,764 tons, 10.8 %
   Hull, fittings & equipment: 10,346 tons, 40.3 %
   Fuel, ammunition & stores: 3,648 tons, 14.2 %
   Miscellaneous weights: 420 tons, 1.6 %
      - Hull below water: 100 tons
      - On freeboard deck: 100 tons
      - Above deck: 220 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     33,994 lbs / 15,419 Kg = 24.8 x 14.0 " / 356 mm shells or 5.1 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 5.1 ft / 1.5 m
   Roll period: 16.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.92
   Seaboat quality  (Average = 1.00): 1.35

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.520 / 0.528
   Length to Beam Ratio: 7.78 : 1
   'Natural speed' for length: 26.46 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   30.00 %,  27.00 ft / 8.23 m,  20.00 ft / 6.10 m
      - Forward deck:   20.00 %,  20.00 ft / 6.10 m,  20.00 ft / 6.10 m
      - Aft deck:   35.00 %,  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:      20.84 ft / 6.35 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 93.3 %
      - Above water (accommodation/working, high = better): 160.8 %
   Waterplane Area: 42,754 Square feet or 3,972 Square metres
   Displacement factor (Displacement / loading): 112 %
   Structure weight / hull surface area: 183 lbs/sq ft or 892 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.39
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

220t for 1912  FC
100t for Long-range wireless and flagship facilities
100t for Enhanced Damage Control

Armored cruisers would certainly hate this.

I think your 5" deck mount count is off, though.

Just 2 shafts? I would think 4 myself...

Quote from: eltf177 on April 08, 2021, 08:30:12 AM
Just 2 shafts? I would think 4 myself...

2 is pushing it a bit, but fine-ish.  I'd think that something along the lines of 40,000hp per shaft would be the absolute max before you need to add a shaft.

Just an oversight on my part, both issues fixed.