The final step in this design series: GB/CA/1940

The final step in this design series seemed to demand using 9.2in BLR. For a ship of this size, over 23,000 tons normal, 8in guns seemed to be too small. I suspect that the last design had some shortcomings, brought on by typos. This one is a super-ship, with a speed of 36 knots, a range of 8,500nm at 15 knots and a 5in armour basis. This is the Springsharp report:

GB/CA/1940, Great Britain Heavy Cruiser laid down 1940

Displacement:
 20,903 t light; 21,760 t standard; 23,400 t normal; 24,712 t full load

Dimensions: Length overall / water x beam x draught
 738.00 ft / 738.00 ft x 71.00 ft x 26.50 ft (normal load)
 224.94 m / 224.94 m x 21.64 m  x 8.08 m

Armament:
      9 - 9.20" / 234 mm guns (3x3 guns), 389.34lbs / 176.60kg shells, 1940 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 4.70" / 119 mm guns (8x2 guns), 51.91lbs / 23.55kg shells, 1940 Model
   Dual purpose guns in turrets (on barbettes)
   on side, all amidships
      48 - 1.57" / 40.0 mm guns (12x4 guns), 1.95lbs / 0.89kg shells, 1940 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread
 Weight of broadside 4,428 lbs / 2,009 kg
 Shells per gun, main battery: 150
 16 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 5.00" / 127 mm 670.00 ft / 204.22 m 15.00 ft / 4.57 m
 Ends: Unarmoured
   Main Belt covers 140 % of normal length

   - Torpedo Bulkhead:
  1.00" / 25 mm 670.00 ft / 204.22 m 25.00 ft / 7.62 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 6.00" / 152 mm 3.00" / 76 mm  6.00" / 152 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm
 3rd: 1.00" / 25 mm       -         -

   - Armour deck: 4.00" / 102 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 189,933 shp / 141,690 Kw = 36.00 kts
 Range 8,500nm at 15.00 kts
 Bunker at max displacement = 2,953 tons

Complement:
 945 - 1,229

Cost:
 £11.445 million / $45.781 million

Distribution of weights at normal displacement:
 Armament: 554 tons, 2.4 %
 Armour: 6,680 tons, 28.5 %
    - Belts: 1,993 tons, 8.5 %
    - Torpedo bulkhead: 620 tons, 2.6 %
    - Armament: 1,035 tons, 4.4 %
    - Armour Deck: 2,927 tons, 12.5 %
    - Conning Tower: 106 tons, 0.5 %
 Machinery: 5,078 tons, 21.7 %
 Hull, fittings & equipment: 8,590 tons, 36.7 %
 Fuel, ammunition & stores: 2,497 tons, 10.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   30,570 lbs / 13,866 Kg = 78.5 x 9.2 " / 234 mm shells or 3.5 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 3.7 ft / 1.1 m
 Roll period: 15.5 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.66
 Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
 Hull has a flush deck
   and transom stern
 Block coefficient: 0.590
 Length to Beam Ratio: 10.39 : 1
 'Natural speed' for length: 30.63 kts
 Power going to wave formation at top speed: 59 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  33.00 ft / 10.06 m
    - Forecastle (20 %): 25.00 ft / 7.62 m
    - Mid (50 %):  25.00 ft / 7.62 m
    - Quarterdeck (15 %): 25.00 ft / 7.62 m
    - Stern:  25.00 ft / 7.62 m
    - Average freeboard: 25.64 ft / 7.82 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 124.3 %
  - Above water (accommodation/working, high = better): 157.4 %
 Waterplane Area: 39,554 Square feet or 3,675 Square metres
 Displacement factor (Displacement / loading): 110 %
 Structure weight / hull surface area: 133 lbs/sq ft or 649 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.42
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent