The GB/CA/1921 design

This is the "heavy cruiser" version of my basic design. This ship has a 4in belt with a 2in deck. The main armament consists of 8-9.2in/50 BLR. The secondary armament is 6-4.7in AA guns. There are also 16-21in TT. The maximum speed is 33 knots. The range is still 8500nm. This is the sort of cruiser killer that Frank Fox told me that he liked. He didn't care for some of my more extreme, super-fast ships with a few heavy guns. I must admit that he is correct in his assessment. I have this near-fatal attraction for really extreme ships that would never be built. This is the Springsharp report:

GB/CL/1921, Great Britain Heavy Cruiser laid down 1921 (Engine 1935)

Displacement:
 14,012 t light; 14,613 t standard; 16,243 t normal; 17,548 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (668.56 ft / 665.00 ft) x 67.00 ft x (22.00 / 23.43 ft)
 (203.78 m / 202.69 m) x 20.42 m  x (6.71 / 7.14 m)

Armament:
      8 - 9.20" / 234 mm 50.0 cal guns - 380.00lbs / 172.37kg shells, 150 per gun
   Breech loading guns in turret on barbette mounts, 1921 Model
   4 x Twin mounts on centreline ends, evenly spread
  2 raised mounts - superfiring
      6 - 4.70" / 119 mm 45.0 cal guns - 52.35lbs / 23.75kg shells, 0 per gun
   Anti-air guns in deck and hoist mounts, 1921 Model
   6 x Single mounts on sides, aft deck forward
  6 raised mounts
      Weight of broadside 3,354 lbs / 1,521 kg
      16 - 21.0" / 533 mm, 22.00 ft / 6.71 m torpedoes - 1.425 t each, 22.803 t total
 In 4 sets of deck mounted side rotating tubes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 440.00 ft / 134.11 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 4.00" / 102 mm 380.00 ft / 115.82 m 8.00 ft / 2.44 m
   Main Belt covers 102 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  0.80" / 20 mm 440.00 ft / 134.11 m 22.00 ft / 6.71 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 5.00" / 127 mm 4.00" / 102 mm  5.00" / 127 mm

   - Protected deck - single deck: 2.00" / 51 mm For and Aft decks
 Forecastle: 2.00" / 51 mm  Quarter deck: 2.00" / 51 mm

   - Conning towers: Forward 5.00" / 127 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 127,823 shp / 95,356 Kw = 33.00 kts
 Range 8,500nm at 16.00 kts
 Bunker at max displacement = 2,935 tons

Complement:
 719 - 935

Cost:
 £3.492 million / $13.967 million

Distribution of weights at normal displacement:
 Armament: 924 tons, 5.7 %
    - Guns: 901 tons, 5.5 %
    - Torpedoes: 23 tons, 0.1 %
 Armour: 3,353 tons, 20.6 %
    - Belts: 1,092 tons, 6.7 %
    - Torpedo bulkhead: 287 tons, 1.8 %
    - Armament: 714 tons, 4.4 %
    - Armour Deck: 1,191 tons, 7.3 %
    - Conning Tower: 69 tons, 0.4 %
 Machinery: 3,631 tons, 22.4 %
 Hull, fittings & equipment: 6,104 tons, 37.6 %
 Fuel, ammunition & stores: 2,231 tons, 13.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   21,662 lbs / 9,826 Kg = 55.6 x 9.2 " / 234 mm shells or 2.6 torpedoes
 Stability (Unstable if below 1.00): 1.07
 Metacentric height 3.1 ft / 0.9 m
 Roll period: 16.0 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.78
 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): 0.580 / 0.588
 Length to Beam Ratio: 9.93 : 1
 'Natural speed' for length: 25.79 kts
 Power going to wave formation at top speed: 57 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 7.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 25.00 %,  29.00 ft / 8.84 m,  26.00 ft / 7.92 m
    - Forward deck: 25.00 %,  26.00 ft / 7.92 m,  25.00 ft / 7.62 m
    - Aft deck: 21.00 %,  25.00 ft / 7.62 m,  25.00 ft / 7.62 m
    - Quarter deck: 29.00 %,  17.00 ft / 5.18 m,  18.00 ft / 5.49 m
    - Average freeboard:  23.50 ft / 7.16 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 133.6 %
  - Above water (accommodation/working, high = better): 210.6 %
 Waterplane Area: 31,982 Square feet or 2,971 Square metres
 Displacement factor (Displacement / loading): 115 %
 Structure weight / hull surface area: 127 lbs/sq ft or 621 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.36
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent