My revision to the Ger/CB/1912 battlecruiser design

I have a page with some specifics about the Ger/CB/1912 battlecruiser. There is a nice photo of one of these ships:

This is the Springsharp report for the revised design. Like other recent designs, this relies heavily on lightweight machinery:

Ger/CB/1912, Germany Battlecruiser laid down 1912 (Engine 1931)

Displacement:
 35,442 t light; 36,728 t standard; 39,559 t normal; 41,824 t full load

Dimensions: Length overall / water x beam x draught
 822.00 ft / 820.00 ft x 105.00 ft x 29.40 ft (normal load)
 250.55 m / 249.94 m x 32.00 m  x 8.96 m

Armament:
     6 - 15.00" / 381 mm guns (2x3 guns), 1,687.50lbs / 765.44kg shells, 1912 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, all forward, 1 raised mount - superfiring
     8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1912 Model
   Quick firing guns in deck mounts with hoists
   on centreline, all amidships
 Weight of broadside 10,989 lbs / 4,985 kg
 Shells per gun, main battery: 80

Armour:
  - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 630.00 ft / 192.02 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 118 % of normal length

  - Torpedo Bulkhead:
  2.00" / 51 mm 630.00 ft / 192.02 m 28.00 ft / 8.53 m

  - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 9.00" / 229 mm 7.00" / 178 mm  9.00" / 229 mm
 2nd: 2.00" / 51 mm       -         -

  - Armour deck: 5.00" / 127 mm, Conning tower: 9.00" / 229 mm

Machinery:
 Oil fired boilers, steam turbines,
 Direct drive, 4 shafts, 207,899 shp / 155,093 Kw = 33.00 kts
 Range 6,250nm at 18.00 kts
 Bunker at max displacement = 5,096 tons

Complement:
 1,402 - 1,823

Cost:
 £3.265 million / $13.059 million

Distribution of weights at normal displacement:
 Armament: 1,374 tons, 3.5 %
 Armour: 11,529 tons, 29.1 %
    - Belts: 2,659 tons, 6.7 %
    - Torpedo bulkhead: 1,305 tons, 3.3 %
    - Armament: 1,797 tons, 4.5 %
    - Armour Deck: 5,542 tons, 14.0 %
    - Conning Tower: 225 tons, 0.6 %
 Machinery: 6,217 tons, 15.7 %
 Hull, fittings & equipment: 16,322 tons, 41.3 %
 Fuel, ammunition & stores: 4,117 tons, 10.4 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   61,718 lbs / 27,995 Kg = 36.6 x 15.0 " / 381 mm shells or 8.8 torpedoes
 Stability (Unstable if below 1.00): 1.20
 Metacentric height 7.6 ft / 2.3 m
 Roll period: 16.0 seconds
 Steadiness - As gun platform (Average = 50 %): 61 %
   - Recoil effect (Restricted arc if above 1.00): 0.50
 Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.547
 Length to Beam Ratio: 7.81 : 1
 'Natural speed' for length: 28.64 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  34.00 ft / 10.36 m
    - Forecastle (20 %): 30.00 ft / 9.14 m
    - Mid (67 %):  30.00 ft / 9.14 m (22.00 ft / 6.71 m aft of break)
    - Quarterdeck (15 %): 22.00 ft / 6.71 m
    - Stern:  22.00 ft / 6.71 m
    - Average freeboard: 27.68 ft / 8.44 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 95.4 %
  - Above water (accommodation/working, high = better): 226.2 %
 Waterplane Area: 59,918 Square feet or 5,567 Square metres
 Displacement factor (Displacement / loading): 113 %
 Structure weight / hull surface area: 189 lbs/sq ft or 923 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.95
  - Longitudinal: 1.49
  - 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