The US/BB/1933 is suitable for Pacific warfare

I increased the displacement of the US/BB/1933 so as to have slightly better protection but especially to have a 12,000nm range at 15 knots. The armament is more modern, with 24-5in DP, 36-1.1in AA, as well as the 9-18in BLR, and 36-0.5in MG. What I don't understand is why this is achievable on such a relatively small displacement compared with the Yamato class. Part of the answer may be that the Japanese ship carried more protection. This is the Springsharp report:

US/BB/1933, United States Battleship laid down 1933

Displacement:
 55,163 t light; 57,817 t standard; 62,500 t normal; 66,246 t full load

Dimensions: Length overall / water x beam x draught
 790.54 ft / 785.00 ft x 112.00 ft x 33.00 ft (normal load)
 240.96 m / 239.27 m x 34.14 m  x 10.06 m

Armament:
      9 - 18.00" / 457 mm guns (3x3 guns), 2,916.00lbs / 1,322.68kg shells, 1933 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      24 - 5.00" / 127 mm guns (12x2 guns), 62.50lbs / 28.35kg shells, 1933 Model
   Dual purpose guns in turrets (on barbettes)
   on side, all amidships, 4 raised mounts - superfiring
      36 - 1.10" / 27.9 mm guns (9x4 guns), 0.67lbs / 0.30kg shells, 1933 Model
   Anti-aircraft guns in deck mounts with hoists
   on side, all amidships, 7 raised mounts - superfiring
      32 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1933 Model
   Machine guns in deck mounts 
   on side, evenly spread, all raised mounts
 Weight of broadside 27,770 lbs / 12,596 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 17.0" / 432 mm 530.00 ft / 161.54 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 104 % of normal length

   - Torpedo Bulkhead:
  5.00" / 127 mm 530.00 ft / 161.54 m 32.00 ft / 9.75 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 17.0" / 432 mm 12.0" / 305 mm  17.0" / 432 mm
 2nd: 2.00" / 51 mm 2.00" / 51 mm  2.00" / 51 mm

   - Armour deck: 7.00" / 178 mm, Conning tower: 17.00" / 432 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 138,819 shp / 103,559 Kw = 27.00 kts
 Range 12,000nm at 15.00 kts
 Bunker at max displacement = 8,429 tons

Complement:
 1,976 - 2,569

Cost:
 £25.588 million / $102.351 million

Distribution of weights at normal displacement:
 Armament: 3,471 tons, 5.6 %
 Armour: 25,508 tons, 40.8 %
    - Belts: 6,635 tons, 10.6 %
    - Torpedo bulkhead: 3,138 tons, 5.0 %
    - Armament: 5,590 tons, 8.9 %
    - Armour Deck: 9,568 tons, 15.3 %
    - Conning Tower: 577 tons, 0.9 %
 Machinery: 4,045 tons, 6.5 %
 Hull, fittings & equipment: 22,138 tons, 35.4 %
 Fuel, ammunition & stores: 7,337 tons, 11.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   96,463 lbs / 43,755 Kg = 33.1 x 18.0 " / 457 mm shells or 17.7 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 7.3 ft / 2.2 m
 Roll period: 17.4 seconds
 Steadiness - As gun platform (Average = 50 %): 55 %
   - Recoil effect (Restricted arc if above 1.00): 0.80
 Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
 Hull has low forecastle
 Block coefficient: 0.754
 Length to Beam Ratio: 7.01 : 1
 'Natural speed' for length: 28.02 kts
 Power going to wave formation at top speed: 51 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 5.00 degrees
 Stern overhang: 3.00 ft / 0.91 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  29.00 ft / 8.84 m
    - Forecastle (20 %): 1.00 ft / 0.30 m (25.00 ft / 7.62 m aft of break)
    - 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: 22.44 ft / 6.84 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 76.7 %
  - Above water (accommodation/working, high = better): 178.1 %
 Waterplane Area: 73,887 Square feet or 6,864 Square metres
 Displacement factor (Displacement / loading): 102 %
 Structure weight / hull surface area: 226 lbs/sq ft or 1,103 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.98
  - Longitudinal: 1.19
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent