A very fast version of the Ger/CB/1915 design

My original hope for the Ger/CB/1915, back in the early 1970's was for the ships to be capable of 40 knots. For 40 knots to be a possibility, even with the lightest machinery, I had to tweak the dimensions. I am using some "Springsharp hacks", such as raising the freeboard to extremes and increasing the draft. By doing that I was able to achieve this design, which is very "edgy". If you accept all that, the design looks pretty acceptable on paper:

Ger/CB/1915 very fast, Germany Battlecruiser laid down 1915 (Engine 1950)

Displacement:
 42,646 t light; 44,816 t standard; 46,155 t normal; 47,226 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (916.25 ft / 905.00 ft) x 102.00 ft x (35.00 / 35.61 ft)
 (279.27 m / 275.84 m) x 31.09 m  x (10.67 / 10.85 m)

Armament:
      6 - 16.50" / 419 mm 45.0 cal guns - 2,265.21lbs / 1,027.48kg shells, 150 per gun
   Breech loading guns in turret on barbette mounts, 1915 Model
   2 x Triple mounts on centreline, forward deck forward
  1 raised mount - superfiring
      12 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 150 per gun
   Breech loading guns in deck and hoist mount, 1915 Model
   1 x Single mount on sides, forward deck aft
  2 raised mounts
      Weight of broadside 14,963 lbs / 6,787 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 8.00" / 203 mm 535.00 ft / 163.07 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 5.00" / 127 mm 535.00 ft / 163.07 m 8.00 ft / 2.44 m
   Main Belt covers 91 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  2.00" / 51 mm 535.00 ft / 163.07 m 35.00 ft / 10.67 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 6.00" / 152 mm  8.00" / 203 mm
 2nd: 4.00" / 102 mm 2.00" / 51 mm  4.00" / 102 mm

   - Protected deck - single deck: 3.00" / 76 mm For and Aft decks
 Forecastle: 3.00" / 76 mm  Quarter deck: 3.00" / 76 mm

   - Conning towers: Forward 8.00" / 203 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 8 shafts, 457,786 shp / 341,508 Kw = 40.00 kts
 Range 5,000nm at 14.00 kts
 Bunker at max displacement = 2,409 tons

Complement:
 1,573 - 2,046

Cost:
 £6.453 million / $25.813 million

Distribution of weights at normal displacement:
 Armament: 2,583 tons, 5.6 %
 Armour: 9,285 tons, 20.1 %
    - Belts: 2,350 tons, 5.1 %
    - Torpedo bulkhead: 1,386 tons, 3.0 %
    - Armament: 1,889 tons, 4.1 %
    - Armour Deck: 3,438 tons, 7.4 %
    - Conning Tower: 222 tons, 0.5 %
 Machinery: 10,952 tons, 23.7 %
 Hull, fittings & equipment: 19,827 tons, 43.0 %
 Fuel, ammunition & stores: 3,509 tons, 7.6 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   46,974 lbs / 21,307 Kg = 20.9 x 16.5 " / 419 mm shells or 5.3 torpedoes
 Stability (Unstable if below 1.00): 1.09
 Metacentric height 6.1 ft / 1.8 m
 Roll period: 17.4 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.81
 Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
 Hull has rise forward of midbreak,
   an extended bulbous bow and a cruiser stern
 Block coefficient (normal/deep): 0.500 / 0.503
 Length to Beam Ratio: 8.87 : 1
 'Natural speed' for length: 30.08 kts
 Power going to wave formation at top speed: 59 %
 Trim (Max stability = 0, Max steadiness = 100): 51
 Bow angle (Positive = bow angles forward): 15.00 degrees
 Stern overhang: 0.00 ft / 0.00 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 30.00 %,  42.00 ft / 12.80 m,  35.00 ft / 10.67 m
    - Forward deck: 37.00 %,  35.00 ft / 10.67 m,  33.00 ft / 10.06 m
    - Aft deck: 18.00 %,  25.00 ft / 7.62 m,  25.00 ft / 7.62 m
    - Quarter deck: 15.00 %,  25.00 ft / 7.62 m,  25.00 ft / 7.62 m
    - Average freeboard:  32.17 ft / 9.81 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 131.2 %
  - Above water (accommodation/working, high = better): 231.3 %
 Waterplane Area: 61,504 Square feet or 5,714 Square metres
 Displacement factor (Displacement / loading): 103 %
 Structure weight / hull surface area: 211 lbs/sq ft or 1,032 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.93
  - Longitudinal: 1.78
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent