The GB/CB/1910 Fast design

The GB/CB/1910 Fast design in the "Red Book" is a rather minimalist listing. I was, as always, extremely over-optimistic about how much displacement and power would be required. The ship is in the spirit of the original GB/CB/1905 design, but with much higher speed (38 knots). With Springsharp 3.0 Beta 3, we have the 38 knots. The ship has 4-13.5in guns and light armour. Back when this design was conceived, we always used oil fuel and all-or-nothing armour. This is the Springsharp report:

GB/CB/1910 Fast, Great Britain Battlecruiser laid down 1910 (Engine 1918)

Displacement:
 33,742 t light; 34,782 t standard; 37,383 t normal; 39,463 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (854.78 ft / 850.00 ft) x 95.00 ft x (33.00 / 34.36 ft)
 (260.54 m / 259.08 m) x 28.96 m  x (10.06 / 10.47 m)

Armament:
      4 - 13.50" / 343 mm 45.0 cal guns - 1,250.00lbs / 566.99kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts, 1910 Model
   2 x Twin mounts on centreline ends, evenly spread
      16 - 4.00" / 102 mm 45.0 cal guns - 32.00lbs / 14.51kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts, 1910 Model
   16 x Single mounts on sides, forward deck aft
  4 raised mounts - superfiring
      Weight of broadside 5,512 lbs / 2,500 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 475.00 ft / 144.78 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 86 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead - Additional damage containing bulkheads:
  1.50" / 38 mm 475.00 ft / 144.78 m 33.00 ft / 10.06 m
 Beam between torpedo bulkheads 64.00 ft / 19.51 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 2.00" / 51 mm  4.00" / 102 mm

   - Armoured deck - multiple decks:
 For and Aft decks: 3.00" / 76 mm
 Forecastle: 3.00" / 76 mm  Quarter deck: 3.00" / 76 mm

   - Conning towers: Forward 8.00" / 203 mm, Aft 5.00" / 127 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 6 shafts, 332,727 shp / 248,214 Kw = 38.00 kts
 Range 6,500nm at 16.00 kts
 Bunker at max displacement = 4,681 tons

Complement:
 1,343 - 1,747

Cost:
 £3.374 million / $13.497 million

Distribution of weights at normal displacement:
 Armament: 995 tons, 2.7 %
    - Guns: 995 tons, 2.7 %
 Armour: 7,221 tons, 19.3 %
    - Belts: 1,937 tons, 5.2 %
    - Torpedo bulkhead: 870 tons, 2.3 %
    - Armament: 1,121 tons, 3.0 %
    - Armour Deck: 2,980 tons, 8.0 %
    - Conning Towers: 313 tons, 0.8 %
 Machinery: 12,003 tons, 32.1 %
 Hull, fittings & equipment: 13,522 tons, 36.2 %
 Fuel, ammunition & stores: 3,641 tons, 9.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   35,148 lbs / 15,943 Kg = 28.6 x 13.5 " / 343 mm shells or 3.7 torpedoes
 Stability (Unstable if below 1.00): 1.30
 Metacentric height 7.4 ft / 2.3 m
 Roll period: 14.6 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.29
 Seaboat quality  (Average = 1.00): 1.07

Hull form characteristics:
 Hull has low quarterdeck ,
   a normal bow and a cruiser stern
 Block coefficient (normal/deep): 0.491 / 0.498
 Length to Beam Ratio: 8.95 : 1
 'Natural speed' for length: 29.15 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 49
 Bow angle (Positive = bow angles forward): 8.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 20.00 %,  34.00 ft / 10.36 m,  31.00 ft / 9.45 m
    - Forward deck: 30.00 %,  31.00 ft / 9.45 m,  30.00 ft / 9.14 m
    - Aft deck: 17.00 %,  30.00 ft / 9.14 m,  30.00 ft / 9.14 m
    - Quarter deck: 33.00 %,  22.00 ft / 6.71 m,  22.00 ft / 6.71 m
    - Average freeboard:  27.95 ft / 8.52 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 173.0 %
  - Above water (accommodation/working, high = better): 229.5 %
 Waterplane Area: 53,365 Square feet or 4,958 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 166 lbs/sq ft or 808 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.40
  - Overall: 1.00
 Cramped machinery, storage, compartmentation space
 Excellent accommodation and workspace room