The GB/CB/1905 Mod.2, based on what Frank Fox and D.K. Brown told me

Both Frank Fox and D.K. Brown cautioned me against having a battlecruiser with 4-12in guns. They also suggested that the design needed more than just 4in of side armor. D.K. Brown thought that 6in would be adequate side armor, but Frank Fox would have preferred more, as I remember. This is my Springsharp report with 8-12in BLR guns, 12-6in QF guns, 9in side armor, 3in deck armor, and 33 knot speed.

GB/CB/1905 Mod.2, Enter country Enter ship type laid down 1905 (Engine 1917)

Displacement:
 30,940 t light; 32,053 t standard; 34,598 t normal; 36,633 t full load

Dimensions: Length overall / water x beam x draught
 770.00 ft / 770.00 ft x 95.00 ft x 31.00 ft (normal load)
 234.70 m / 234.70 m x 28.96 m  x 9.45 m

Armament:
     8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, all raised mounts - superfiring
     12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1905 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
 Weight of broadside 8,208 lbs / 3,723 kg
 Shells per gun, main battery: 90

Armour:
  - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 9.00" / 229 mm 530.00 ft / 161.54 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 106 % of normal length
   Main belt does not fully cover magazines and engineering spaces

  - Torpedo Bulkhead:
  1.50" / 38 mm 530.00 ft / 161.54 m 26.00 ft / 7.92 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       -         -

  - Armour deck: 3.00" / 76 mm, Conning tower: 9.00" / 229 mm

Machinery:
 Oil fired boilers, steam turbines,
 Direct drive, 4 shafts, 193,213 shp / 144,137 Kw = 33.00 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 4,580 tons

Complement:
 1,267 - 1,648

Cost:
 £2.936 million / $11.745 million

Distribution of weights at normal displacement:
 Armament: 1,026 tons, 3.0 %
 Armour: 9,246 tons, 26.7 %
    - Belts: 3,411 tons, 9.9 %
    - Torpedo bulkhead: 765 tons, 2.2 %
    - Armament: 2,073 tons, 6.0 %
    - Armour Deck: 2,791 tons, 8.1 %
    - Conning Tower: 206 tons, 0.6 %
 Machinery: 7,083 tons, 20.5 %
 Hull, fittings & equipment: 13,585 tons, 39.3 %
 Fuel, ammunition & stores: 3,658 tons, 10.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   43,605 lbs / 19,779 Kg = 50.5 x 12.0 " / 305 mm shells or 5.3 torpedoes
 Stability (Unstable if below 1.00): 1.08
 Metacentric height 5.4 ft / 1.6 m
 Roll period: 17.2 seconds
 Steadiness - As gun platform (Average = 50 %): 57 %
   - Recoil effect (Restricted arc if above 1.00): 0.65
 Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.534
 Length to Beam Ratio: 8.11 : 1
 'Natural speed' for length: 27.75 kts
 Power going to wave formation at top speed: 56 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  32.00 ft / 9.75 m
    - Forecastle (20 %): 30.00 ft / 9.14 m
    - Mid (67 %):  30.00 ft / 9.14 m (22.00 ft / 6.71 m aft of break)
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 27.52 ft / 8.39 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 112.7 %
  - Above water (accommodation/working, high = better): 210.1 %
 Waterplane Area: 50,292 Square feet or 4,672 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 177 lbs/sq ft or 862 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.46
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent