The Ger/CB/1905 needed oil-fired boilers

The Ger/CB/1905 design is so tight, that I needed to use the originally intended oil-fired boilers and lightweight machinery. Perhaps, if I had let the normal displacement rise further, I might have been able to make it work with coal. I very carefully used the original armour design, which is marked on a large scale drawing. I guess that I should be happy that it works under any circumstances, given our approach to design, when we did the work in 1971. The ship can make 31 knots and has a 4in armour basis. The armament is 4-12in/45 and 12-4in/50 QF guns. This is the Springsharp report:

Ger/CB/1905, Germany Battlecruiser laid down 1905 (Engine 1909)

Displacement:
 18,533 t light; 19,156 t standard; 21,082 t normal; 22,622 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (710.00 ft / 700.00 ft) x 80.00 ft x (24.40 / 25.79 ft)
 (216.41 m / 213.36 m) x 24.38 m  x (7.44 / 7.86 m)

Armament:
      4 - 12.00" / 305 mm 45.0 cal guns - 850.00lbs / 385.55kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts , 1905 Model
   2 x Twin mounts on centreline ends, evenly spread
      12 - 4.00" / 102 mm 50.0 cal guns - 32.00lbs / 14.51kg shells, 150 per gun
   Quick firing guns in casemate mounts , 1905 Model
   6 x Single mounts on sides, forward evenly spread
   6 x Single mounts on sides, aft deck forward
 Weight of broadside 3,784 lbs / 3,784 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 365.00 ft / 111.25 m 10.00 ft / 3.05 m
 Ends: Unarmoured
 Upper: 3.00" / 76 mm 365.00 ft / 111.25 m 8.00 ft / 2.44 m
   Main Belt covers 80 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  2.00" / 51 mm 365.00 ft / 111.25 m 24.40 ft / 7.44 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 9.00" / 229 mm 4.00" / 102 mm  8.00" / 203 mm
 2nd: 4.00" / 102 mm 3.00" / 76 mm  2.00" / 51 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 9.00" / 229 mm

Machinery:
 Oil fired boilers, steam turbines, 
 ERROR: Revise drives, 4 shafts, 114,401 shp / 85,343 Kw = 31.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 3,465 tons

Complement:
 874 - 1,137

Cost:
 £1.724 million / $6.895 million

Distribution of weights at normal displacement:
 Armament: 700 tons, 3.3 %
 Armour: 4,795 tons, 22.7 %
    - Belts: 1,025 tons, 4.9 %
    - Torpedo bulkhead: 659 tons, 3.1 %
    - Armament: 814 tons, 3.9 %
    - Armour Deck: 2,149 tons, 10.2 %
    - Conning Tower: 148 tons, 0.7 %
 Machinery: 5,200 tons, 24.7 %
 Hull, fittings & equipment: 8,124 tons, 38.5 %
 Fuel, ammunition & stores: 2,549 tons, 12.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   30,670 lbs / 13,912 Kg = 35.5 x 12.0 " / 305 mm shells or 3.7 torpedoes
 Stability (Unstable if below 1.00): 1.26
 Metacentric height 5.4 ft / 1.7 m
 Roll period: 14.4 seconds
 Steadiness - As gun platform (Average = 50 %): 71 %
   - Recoil effect (Restricted arc if above 1.00): 0.40
 Seaboat quality  (Average = 1.00): 1.42

Hull form characteristics:
 Hull has low quarterdeck ,
   a ram bow and a cruiser stern
 Block coefficient (normal/deep): 0.540 / 0.548
 Length to Beam Ratio: 8.75 : 1
 'Natural speed' for length: 26.46 kts
 Power going to wave formation at top speed: 53 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): -2.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 25.00 %,  32.00 ft / 9.75 m,  28.00 ft / 8.53 m
    - Forward deck: 25.00 %,  28.00 ft / 8.53 m,  28.00 ft / 8.53 m
    - Aft deck: 12.00 %,  28.00 ft / 8.53 m,  28.00 ft / 8.53 m
    - Quarter deck: 38.00 %,  20.00 ft / 6.10 m,  21.00 ft / 6.40 m
    - Average freeboard:  25.55 ft / 7.79 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 127.0 %
  - Above water (accommodation/working, high = better): 236.3 %
 Waterplane Area: 38,718 Square feet or 3,597 Square metres
 Displacement factor (Displacement / loading): 114 %
 Structure weight / hull surface area: 136 lbs/sq ft or 664 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.48
  - 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