My latest attempt at the Ger/CB/1906 design

I tried the Ger/CB/1906 design as originally specified, and found that I had to increase the displacement and draft to obtain sufficient strength. The ship was intended to be 800ft x 85ft x 25.6ft with a standard displacement of 25,000 tons (I believe it was standard and not normal). My new version had a 27.5ft draft with a 25,245 ton standard displacement. Normal displacement was 26,750 tons. The armament is 8-12in/45 BLR with 12-4in QF guns in shields. The armor basis is only 4in, as this was a very radical concept intended to reach a fairly high speed with 8-12in guns. This is the new Springsharp report:

Ger/CB/1906, Germany Battlecruiser laid down 1906 (Engine 1911)

Displacement:
 24,382 t light; 25,245 t standard; 26,750 t normal; 27,954 t full load

Dimensions: Length overall / water x beam x draught
 800.00 ft / 800.00 ft x 85.00 ft x 27.50 ft (normal load)
 243.84 m / 243.84 m x 25.91 m  x 8.38 m

Armament:
      8 - 12.00" / 305 mm guns (4x2 guns), 864.00lbs / 391.90kg shells, 1906 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1906 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
 Weight of broadside 7,296 lbs / 3,309 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 520.00 ft / 158.50 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 100 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 520.00 ft / 158.50 m 24.00 ft / 7.32 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 6.00" / 152 mm 4.00" / 102 mm  6.00" / 152 mm
 2nd: 2.00" / 51 mm       -         -

   - Armour deck: 3.00" / 76 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 157,197 shp / 117,269 Kw = 33.00 kts
 Range 4,500nm at 14.00 kts
 Bunker at max displacement = 2,708 tons

Complement:
 1,045 - 1,359

Cost:
 £2.513 million / $10.050 million

Distribution of weights at normal displacement:
 Armament: 912 tons, 3.4 %
 Armour: 5,636 tons, 21.1 %
    - Belts: 1,392 tons, 5.2 %
    - Torpedo bulkhead: 462 tons, 1.7 %
    - Armament: 1,265 tons, 4.7 %
    - Armour Deck: 2,516 tons, 9.4 %
    - Conning Tower: 0 tons, 0.0 %
 Machinery: 6,380 tons, 23.8 %
 Hull, fittings & equipment: 11,454 tons, 42.8 %
 Fuel, ammunition & stores: 2,368 tons, 8.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   31,069 lbs / 14,093 Kg = 36.0 x 12.0 " / 305 mm shells or 3.4 torpedoes
 Stability (Unstable if below 1.00): 1.14
 Metacentric height 5.0 ft / 1.5 m
 Roll period: 15.9 seconds
 Steadiness - As gun platform (Average = 50 %): 66 %
   - Recoil effect (Restricted arc if above 1.00): 0.75
 Seaboat quality  (Average = 1.00): 1.33

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.501
 Length to Beam Ratio: 9.41 : 1
 'Natural speed' for length: 28.28 kts
 Power going to wave formation at top speed: 51 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -1.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  33.00 ft / 10.06 m
    - Forecastle (20 %): 29.00 ft / 8.84 m
    - Mid (67 %):  29.00 ft / 8.84 m (21.00 ft / 6.40 m aft of break)
    - Quarterdeck (15 %): 21.00 ft / 6.40 m
    - Stern:  21.00 ft / 6.40 m
    - Average freeboard: 26.68 ft / 8.13 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 134.4 %
  - Above water (accommodation/working, high = better): 221.3 %
 Waterplane Area: 45,334 Square feet or 4,212 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 161 lbs/sq ft or 786 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.30
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily