Another Ger/BB/1916 design

This design's reason for existence is to carry 12-16.5in guns at 28.5 knots. I had originally expected that achieving that speed might involve 200,000 SHP. although I am not sure why. The designed Standard displacement was 60,000 tons. I had to settle for slightly more. The original weights were:

Hull      =21,020 tons
Machinery = 6,700 tons
Armament  = 3,810 tons
Protection=23,670 tons
Misc      = 4,800 tons (8%)

I used the exact dimensions from my specification, and given that there was little guidance with respect to details, I filled those in:

Ger/BB/1916, Germany Battleship laid down 1916 (Engine 1923)

Displacement:
 58,178 t light; 60,913 t standard; 64,300 t normal; 67,010 t full load

Dimensions: Length overall / water x beam x draught
 924.24 ft / 920.00 ft x 120.00 ft x 32.80 ft (normal load)
 281.71 m / 280.42 m x 36.58 m  x 10.00 m

Armament:
      12 - 16.50" / 419 mm guns (4x3 guns), 2,246.06lbs / 1,018.80kg shells, 1916 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      16 - 6.00" / 152 mm guns (8x2 guns), 108.00lbs / 48.99kg shells, 1916 Model
   Quick firing guns in turrets (on barbettes)
   on side, all amidships, 4 raised mounts - superfiring
 Weight of broadside 28,681 lbs / 13,009 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 600.00 ft / 182.88 m 18.00 ft / 5.49 m
 Ends: Unarmoured
   Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 600.00 ft / 182.88 m 31.00 ft / 9.45 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: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm

   - Armour deck: 5.00" / 127 mm, Conning tower: 14.00" / 356 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 157,061 shp / 117,167 Kw = 28.50 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 6,097 tons

Complement:
 2,018 - 2,624

Cost:
 £9.462 million / $37.850 million

Distribution of weights at normal displacement:
 Armament: 3,585 tons, 5.6 %
 Armour: 23,270 tons, 36.2 %
    - Belts: 6,491 tons, 10.1 %
    - Torpedo bulkhead: 2,753 tons, 4.3 %
    - Armament: 5,922 tons, 9.2 %
    - Armour Deck: 7,620 tons, 11.9 %
    - Conning Tower: 484 tons, 0.8 %
 Machinery: 5,249 tons, 8.2 %
 Hull, fittings & equipment: 26,074 tons, 40.6 %
 Fuel, ammunition & stores: 6,122 tons, 9.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   92,432 lbs / 41,927 Kg = 41.2 x 16.5 " / 419 mm shells or 16.1 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 8.1 ft / 2.5 m
 Roll period: 17.7 seconds
 Steadiness - As gun platform (Average = 50 %): 61 %
   - Recoil effect (Restricted arc if above 1.00): 0.69
 Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.621
 Length to Beam Ratio: 7.67 : 1
 'Natural speed' for length: 30.33 kts
 Power going to wave formation at top speed: 46 %
 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:  32.00 ft / 9.75 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (67 %):  26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
    - Quarterdeck (15 %): 18.00 ft / 5.49 m
    - Stern:  18.00 ft / 5.49 m
    - Average freeboard: 23.84 ft / 7.27 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 82.2 %
  - Above water (accommodation/working, high = better): 184.9 %
 Waterplane Area: 82,377 Square feet or 7,653 Square metres
 Displacement factor (Displacement / loading): 103 %
 Structure weight / hull surface area: 237 lbs/sq ft or 1,158 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 1.01
  - Longitudinal: 0.99
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily