The US/CA/1923 design

The US/CA/1923 design is mainly distinguished by having 12-8in guns, as was planned at one point, post 1918, in the US. The speed is still 33 knots and the range 10,000nm. The power plant is about 35 SHP/ton of machinery, which is still pretty conservative. This is the Springsharp report:

US/CA/1923, United States Heavy Cruiser laid down 1923 (Engine 1935)

Displacement:
 12,985 t light; 13,532 t standard; 15,100 t normal; 16,355 t full load

Dimensions: Length overall / water x beam x draught
 638.47 ft / 635.00 ft x 64.00 ft x 24.00 ft (normal load)
 194.60 m / 193.55 m x 19.51 m  x 7.32 m

Armament:
      12 - 8.00" / 203 mm guns (4 mounts), 256.00lbs / 116.12kg shells, 1923 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 4 raised guns - superfiring
      8 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1923 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships
      16 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1923 Model
   Machine guns in deck mounts 
   on side, all amidships, all raised mounts - superfiring
 Weight of broadside 3,573 lbs / 1,621 kg
 Shells per gun, main battery: 120
 8 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 600.00 ft / 182.88 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 145 % of normal length

   - Torpedo Bulkhead:
  1.00" / 25 mm 600.00 ft / 182.88 m 21.00 ft / 6.40 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 4.00" / 102 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 122,207 shp / 91,167 Kw = 33.00 kts
 Range 10,000nm at 15.00 kts
 Bunker at max displacement = 2,823 tons

Complement:
 680 - 885

Cost:
 £3.827 million / $15.310 million

Distribution of weights at normal displacement:
 Armament: 447 tons, 3.0 %
 Armour: 3,398 tons, 22.5 %
    - Belts: 1,509 tons, 10.0 %
    - Torpedo bulkhead: 466 tons, 3.1 %
    - Armament: 329 tons, 2.2 %
    - Armour Deck: 1,041 tons, 6.9 %
    - Conning Tower: 53 tons, 0.3 %
 Machinery: 3,472 tons, 23.0 %
 Hull, fittings & equipment: 5,668 tons, 37.5 %
 Fuel, ammunition & stores: 2,115 tons, 14.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   18,376 lbs / 8,335 Kg = 71.8 x 8.0 " / 203 mm shells or 2.4 torpedoes
 Stability (Unstable if below 1.00): 1.19
 Metacentric height 3.5 ft / 1.1 m
 Roll period: 14.3 seconds
 Steadiness - As gun platform (Average = 50 %): 53 %
   - Recoil effect (Restricted arc if above 1.00): 0.72
 Seaboat quality  (Average = 1.00): 1.06

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.542
 Length to Beam Ratio: 9.92 : 1
 'Natural speed' for length: 25.20 kts
 Power going to wave formation at top speed: 58 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  28.00 ft / 8.53 m
    - Forecastle (20 %): 24.00 ft / 7.32 m
    - Mid (67 %):  24.00 ft / 7.32 m (17.00 ft / 5.18 m aft of break)
    - Quarterdeck (15 %): 17.00 ft / 5.18 m
    - Stern:  17.00 ft / 5.18 m
    - Average freeboard: 22.01 ft / 6.71 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 141.6 %
  - Above water (accommodation/working, high = better): 150.3 %
 Waterplane Area: 28,147 Square feet or 2,615 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 121 lbs/sq ft or 591 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.47
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent