A better version of the Ger/BB/1915 alternative design

I had drawn a picture and supplied specifications for a version of the Ger/BB/1915 battleship design with a more normal draft. The displacement had to rise about the 60,000 tons that was proposed. The issue was structural strength. To carry an 18in armor basis with 9-18in guns created the need for stronger hull and more displacement. This is the SpringSharp report:

Ger/BB/1915 Alt.2, Germany Enter ship type laid down 1915

Displacement:
 57,358 t light; 59,894 t standard; 64,000 t normal; 67,285 t full load

Dimensions: Length overall / water x beam x draught
 751.83 ft / 750.00 ft x 130.00 ft x 34.00 ft (normal load)
 229.16 m / 228.60 m x 39.62 m  x 10.36 m

Armament:
      9 - 18.00" / 457 mm guns (3x3 guns), 2,916.00lbs / 1,322.68kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1915 Model
   Breech loading guns in turrets (on barbettes)
   on side, all amidships, 4 raised mounts - superfiring
 Weight of broadside 27,972 lbs / 12,688 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 18.0" / 457 mm 490.00 ft / 149.35 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 490.00 ft / 149.35 m 32.00 ft / 9.75 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 18.0" / 457 mm 12.0" / 305 mm  18.0" / 457 mm
 2nd: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

   - Armour deck: 8.00" / 203 mm, Conning tower: 18.00" / 457 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 45,638 shp / 34,046 Kw = 20.00 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 7,391 tons

Complement:
 2,011 - 2,615

Cost:
 £7.544 million / $30.177 million

Distribution of weights at normal displacement:
 Armament: 3,497 tons, 5.5 %
 Armour: 27,820 tons, 43.5 %
    - Belts: 6,669 tons, 10.4 %
    - Torpedo bulkhead: 2,321 tons, 3.6 %
    - Armament: 6,893 tons, 10.8 %
    - Armour Deck: 11,316 tons, 17.7 %
    - Conning Tower: 620 tons, 1.0 %
 Machinery: 1,729 tons, 2.7 %
 Hull, fittings & equipment: 24,313 tons, 38.0 %
 Fuel, ammunition & stores: 6,642 tons, 10.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   128,835 lbs / 58,438 Kg = 44.2 x 18.0 " / 457 mm shells or 29.3 torpedoes
 Stability (Unstable if below 1.00): 1.10
 Metacentric height 8.9 ft / 2.7 m
 Roll period: 18.3 seconds
 Steadiness - As gun platform (Average = 50 %): 87 %
   - Recoil effect (Restricted arc if above 1.00): 0.72
 Seaboat quality  (Average = 1.00): 1.73

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.676
 Length to Beam Ratio: 5.77 : 1
 'Natural speed' for length: 27.39 kts
 Power going to wave formation at top speed: 38 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  35.00 ft / 10.67 m
    - Forecastle (20 %): 27.00 ft / 8.23 m
    - Mid (50 %):  27.00 ft / 8.23 m
    - Quarterdeck (15 %): 27.00 ft / 8.23 m
    - Stern:  27.00 ft / 8.23 m
    - Average freeboard: 27.64 ft / 8.42 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 59.1 %
  - Above water (accommodation/working, high = better): 195.5 %
 Waterplane Area: 76,461 Square feet or 7,103 Square metres
 Displacement factor (Displacement / loading): 108 %
 Structure weight / hull surface area: 240 lbs/sq ft or 1,171 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.77
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather