The original version of my Ger/CB/1906 design from 1971 in Springsharp 3.0b Beta

I tried the original version of the Ger/CB/1906 battlecruiser in Springsharp 3.0b Beta, and found that the main trouble was lack of displacement to allow for adequate structural strength. The ship was intended to make 33 knots, but with the 125,073 SHP, the best that could be done was 31 knots. The original version was designed for 120,000 SHP for 33 knots, was not possible. Much more power is required to reach 33 knots with these dimensions. The armour basis is just 4in and the armament is 8-12in/45 and 12-4in QF guns. This is the Springsharp report:

Ger/CB/1906 Original version, Germany Battlecruiser laid down 1906 (Engine 1908)

Displacement:
 23,596 t light; 24,518 t standard; 26,979 t normal; 28,947 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (805.00 ft / 800.00 ft) x 85.00 ft x (26.50 / 27.99 ft)
 (245.36 m / 243.84 m) x 25.91 m  x (8.08 / 8.53 m)

Armament:
      8 - 12.00" / 305 mm 45.0 cal guns - 871.37lbs / 395.24kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts , 1906 Model
   4 x Twin mounts on centreline ends, evenly spread
  2 raised mounts - superfiring
   Aft Main mounts separated by engine room
      12 - 4.00" / 102 mm 50.0 cal guns - 33.88lbs / 15.37kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts , 1906 Model
   12 x Twin mounts on sides, evenly spread
 Weight of broadside 7,377 lbs / 7,377 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 420.00 ft / 128.02 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 81 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 420.00 ft / 128.02 m 25.60 ft / 7.80 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm
 2nd: 3.00" / 76 mm 2.00" / 51 mm  3.00" / 76 mm

   - Armour deck: 3.00" / 76 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 125,073 shp / 93,304 Kw = 31.00 kts
 Range 5,600nm at 15.00 kts
 Bunker at max displacement = 4,429 tons

Complement:
 1,052 - 1,368

Cost:
 £2.405 million / $9.618 million

Distribution of weights at normal displacement:
 Armament: 1,339 tons, 5.0 %
 Armour: 5,459 tons, 20.2 %
    - Belts: 1,168 tons, 4.3 %
    - Torpedo bulkhead: 398 tons, 1.5 %
    - Armament: 1,323 tons, 4.9 %
    - Armour Deck: 2,571 tons, 9.5 %
    - Conning Tower: 0 tons, 0.0 %
 Machinery: 6,317 tons, 23.4 %
 Hull, fittings & equipment: 10,993 tons, 40.7 %
 Fuel, ammunition & stores: 3,383 tons, 12.5 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   32,219 lbs / 14,614 Kg = 37.3 x 12.0 " / 305 mm shells or 3.6 torpedoes
 Stability (Unstable if below 1.00): 1.16
 Metacentric height 5.1 ft / 1.6 m
 Roll period: 15.7 seconds
 Steadiness - As gun platform (Average = 50 %): 72 %
   - Recoil effect (Restricted arc if above 1.00): 0.72
 Seaboat quality  (Average = 1.00): 1.43

Hull form characteristics:
 Hull has rise forward of midbreak,
   a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.524 / 0.532
 Length to Beam Ratio: 9.41 : 1
 'Natural speed' for length: 28.28 kts
 Power going to wave formation at top speed: 48 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: -3.00 ft / -0.91 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 25.00 %,  33.00 ft / 10.06 m,  27.00 ft / 8.23 m
    - Forward deck: 43.00 %,  27.00 ft / 8.23 m,  27.00 ft / 8.23 m
    - Aft deck: 17.00 %,  19.00 ft / 5.79 m,  19.00 ft / 5.79 m
    - Quarter deck: 15.00 %,  19.00 ft / 5.79 m,  21.00 ft / 6.40 m
    - Average freeboard:  25.19 ft / 7.68 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 129.8 %
  - Above water (accommodation/working, high = better): 207.4 %
 Waterplane Area: 46,318 Square feet or 4,303 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 156 lbs/sq ft or 760 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.98
  - Longitudinal: 1.17
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily