An intermediate step: the US/BB/1918 design

This is an intermediate step that the US did not take. They moved on immediately to a 12-16in gun design, while I have opted to go with a 10-16in gun ship with a 23-knot speed. The armour basis remains at 14in with only a 4in deck. For better or worse, I kept a secondary armament mounted in casemates, rather than turrets. The US stayed with the casemate mounts for a long time. This is the Springsharp report:

US/BB/1918, United States Battleship laid down 1918

Displacement:
 35,443 t light; 37,382 t standard; 39,800 t normal; 41,735 t full load

Dimensions: Length overall / water x beam x draught
 626.89 ft / 625.00 ft x 106.00 ft x 30.00 ft (normal load)
 191.08 m / 190.50 m x 32.31 m  x 9.14 m

Armament:
      10 - 16.00" / 406 mm guns (4 mounts), 2,048.00lbs / 928.96kg shells, 1918 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      14 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1918 Model
   Quick firing guns in casemate mounts 
   on side, all amidships, 4 raised mounts - superfiring
      8 - 5.00" / 127 mm guns (4x2 guns), 62.50lbs / 28.35kg shells, 1918 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, evenly spread, 2 raised mounts
      24 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1918 Model
   Machine guns in deck mounts 
   on side, evenly spread, 12 raised mounts
 Weight of broadside 22,494 lbs / 10,203 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 420.00 ft / 128.02 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 103 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 420.00 ft / 128.02 m 29.00 ft / 8.84 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 14.0" / 356 mm 10.0" / 254 mm  14.0" / 356 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 14.00" / 356 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 60,806 shp / 45,361 Kw = 23.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 4,353 tons

Complement:
 1,408 - 1,831

Cost:
 £7.819 million / $31.275 million

Distribution of weights at normal displacement:
 Armament: 2,812 tons, 7.1 %
 Armour: 15,031 tons, 37.8 %
    - Belts: 4,411 tons, 11.1 %
    - Torpedo bulkhead: 1,803 tons, 4.5 %
    - Armament: 4,533 tons, 11.4 %
    - Armour Deck: 3,933 tons, 9.9 %
    - Conning Tower: 352 tons, 0.9 %
 Machinery: 2,194 tons, 5.5 %
 Hull, fittings & equipment: 15,407 tons, 38.7 %
 Fuel, ammunition & stores: 4,357 tons, 10.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   53,925 lbs / 24,460 Kg = 26.3 x 16.0 " / 406 mm shells or 9.5 torpedoes
 Stability (Unstable if below 1.00): 1.06
 Metacentric height 6.1 ft / 1.9 m
 Roll period: 18.0 seconds
 Steadiness - As gun platform (Average = 50 %): 65 %
   - Recoil effect (Restricted arc if above 1.00): 0.91
 Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.701
 Length to Beam Ratio: 5.90 : 1
 'Natural speed' for length: 25.00 kts
 Power going to wave formation at top speed: 50 %
 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:  27.00 ft / 8.23 m
    - Forecastle (20 %): 25.00 ft / 7.62 m
    - Mid (67 %):  25.00 ft / 7.62 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: 22.52 ft / 6.86 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 87.4 %
  - Above water (accommodation/working, high = better): 163.8 %
 Waterplane Area: 53,142 Square feet or 4,937 Square metres
 Displacement factor (Displacement / loading): 95 %
 Structure weight / hull surface area: 216 lbs/sq ft or 1,056 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.68
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily