Talk about an "edgy" design: the GB/CB/1931

Continuing the current string of designs a step further is a design that is very edgy, in the sense of pushing the limits or propriety. The GB/CB/1931 has 8-20in BLR, 20-4.5in DP, and 56-2pdr AA guns. The armour basis is 16in and the maximum speed is 33 knots. The deck is up to 8in thick and the torpedo bulkhead is 6in. The range is a rather modest 8,500 nm, but that is at 18 knots. If the cruising speed is reduced to 15 knots, then the range opens up to a respectable 12,500nm. This is the Springsharp report:

GB/CB/1931, Great Britain Battlecruiser laid down 1931

Displacement:
 81,144 t light; 84,436 t standard; 90,600 t normal; 95,532 t full load

Dimensions: Length overall / water x beam x draught
 977.59 ft / 975.00 ft x 128.00 ft x 35.00 ft (normal load)
 297.97 m / 297.18 m x 39.01 m  x 10.67 m

Armament:
      8 - 20.00" / 508 mm guns (4x2 guns), 4,000.00lbs / 1,814.37kg shells, 1931 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      20 - 4.50" / 114 mm guns (10x2 guns), 45.56lbs / 20.67kg shells, 1931 Model
   Dual purpose guns in turrets (on barbettes)
   on side, evenly spread, all raised mounts
      56 - 1.57" / 40.0 mm guns (14x4 guns), 2.00lbs / 0.91kg shells, 1931 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 8 raised mounts
 Weight of broadside 33,023 lbs / 14,979 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 16.0" / 406 mm 650.00 ft / 198.12 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 12.0" / 305 mm 650.00 ft / 198.12 m 8.00 ft / 2.44 m
   Main Belt covers 103 % of normal length

   - Torpedo Bulkhead:
  6.00" / 152 mm 650.00 ft / 198.12 m 32.00 ft / 9.75 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 16.0" / 406 mm 12.0" / 305 mm  16.0" / 406 mm
 2nd: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm
 3rd: 1.00" / 25 mm       -         -

   - Armour deck: 8.00" / 203 mm, Conning tower: 12.00" / 305 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 6 shafts, 307,571 shp / 229,448 Kw = 33.00 kts
 Range 8,500nm at 18.00 kts
 Bunker at max displacement = 11,096 tons

Complement:
 2,610 - 3,394

Cost:
 £33.141 million / $132.565 million

Distribution of weights at normal displacement:
 Armament: 4,128 tons, 4.6 %
 Armour: 34,489 tons, 38.1 %
    - Belts: 6,257 tons, 6.9 %
    - Torpedo bulkhead: 4,618 tons, 5.1 %
    - Armament: 7,266 tons, 8.0 %
    - Armour Deck: 15,827 tons, 17.5 %
    - Conning Tower: 522 tons, 0.6 %
 Machinery: 9,198 tons, 10.2 %
 Hull, fittings & equipment: 33,329 tons, 36.8 %
 Fuel, ammunition & stores: 9,456 tons, 10.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   140,813 lbs / 63,872 Kg = 35.2 x 20.0 " / 508 mm shells or 26.1 torpedoes
 Stability (Unstable if below 1.00): 1.13
 Metacentric height 9.2 ft / 2.8 m
 Roll period: 17.7 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.65
 Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
 Hull has rise forward of midbreak
   and transom stern
 Block coefficient: 0.726
 Length to Beam Ratio: 7.62 : 1
 'Natural speed' for length: 35.61 kts
 Power going to wave formation at top speed: 55 %
 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:  37.00 ft / 11.28 m
    - Forecastle (20 %): 31.00 ft / 9.45 m
    - Mid (67 %):  31.00 ft / 9.45 m (23.00 ft / 7.01 m aft of break)
    - Quarterdeck (15 %): 23.00 ft / 7.01 m
    - Stern:  23.00 ft / 7.01 m
    - Average freeboard: 28.84 ft / 8.79 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 79.7 %
  - Above water (accommodation/working, high = better): 224.6 %
 Waterplane Area: 106,938 Square feet or 9,935 Square metres
 Displacement factor (Displacement / loading): 105 %
 Structure weight / hull surface area: 239 lbs/sq ft or 1,169 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.99
  - Longitudinal: 1.06
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent