A very fast battlecruiser: Ger/CB/1917

I don't believe that I have published this previously: Ger/CB/1917. I did not give the design a designation on the specification page, but this is my estimate. The ship was to be a 36,000 ton Standard battlecruiser with 6-18in and 10-5in guns. The normal displacement was to be 37,500 tons. I had hoped for very extreme and unrealistic speeds, but 36 knots is still pretty good. This is the Springsharp report:

Ger/CB/1917 very fast, Germany Battlecruiser laid down 1917 (Engine 1927)

Displacement:
 34,397 t light; 36,071 t standard; 38,100 t normal; 39,723 t full load

Dimensions: Length overall / water x beam x draught
 852.97 ft / 850.00 ft x 105.00 ft x 30.00 ft (normal load)
 259.99 m / 259.08 m x 32.00 m  x 9.14 m

Armament:
      6 - 18.00" / 457 mm guns (2x3 guns), 2,916.00lbs / 1,322.68kg shells, 1917 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      10 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1917 Model
   Quick firing guns in deck mounts with hoists
   on side, evenly spread
 Weight of broadside 18,121 lbs / 8,220 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 540.00 ft / 164.59 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 98 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  2.00" / 51 mm 560.00 ft / 170.69 m 32.00 ft / 9.75 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: 3.00" / 76 mm 3.00" / 76 mm  3.00" / 76 mm

   - Armour deck: 1.00" / 25 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 6 shafts, 275,894 shp / 205,817 Kw = 36.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 3,652 tons

Complement:
 1,363 - 1,772

Cost:
 £7.865 million / $31.460 million

Distribution of weights at normal displacement:
 Armament: 2,265 tons, 5.9 %
 Armour: 4,839 tons, 12.7 %
    - Belts: 1,104 tons, 2.9 %
    - Torpedo bulkhead: 1,326 tons, 3.5 %
    - Armament: 1,310 tons, 3.4 %
    - Armour Deck: 1,098 tons, 2.9 %
    - Conning Tower: 0 tons, 0.0 %
 Machinery: 8,709 tons, 22.9 %
 Hull, fittings & equipment: 18,584 tons, 48.8 %
 Fuel, ammunition & stores: 3,703 tons, 9.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   33,698 lbs / 15,285 Kg = 11.6 x 18.0 " / 457 mm shells or 4.2 torpedoes
 Stability (Unstable if below 1.00): 1.26
 Metacentric height 8.2 ft / 2.5 m
 Roll period: 15.4 seconds
 Steadiness - As gun platform (Average = 50 %): 52 %
   - Recoil effect (Restricted arc if above 1.00): 0.64
 Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.498
 Length to Beam Ratio: 8.10 : 1
 'Natural speed' for length: 29.15 kts
 Power going to wave formation at top speed: 56 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 5.00 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 %): 27.00 ft / 8.23 m
    - Mid (50 %):  27.00 ft / 8.23 m
    - Quarterdeck (15 %): 27.00 ft / 8.23 m
    - Stern:  27.00 ft / 8.23 m
    - Average freeboard: 27.56 ft / 8.40 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 145.9 %
  - Above water (accommodation/working, high = better): 224.0 %
 Waterplane Area: 59,359 Square feet or 5,515 Square metres
 Displacement factor (Displacement / loading): 94 %
 Structure weight / hull surface area: 215 lbs/sq ft or 1,048 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.49
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent