The coal-fired boiler version of the Ger/CB/1911

The Ger/CB/1911 was so over-specified, when I made the specification in 1971, that the ship easily uses coal-fired boilers and is still a very capable ship, except for being under-armed. The ship is 750ft x 100ft x 30ft, with 6-12in guns in triple turrets, forward. The secondary armament is an inadequate 8-6in QF guns in shields. The side armour is 6in with a thick 5in deck. The turret faces and barbettes are 8in thick. The torpedo bulkhead is 2in. The speed is 30 knots, with a cruising speed of 18 knots for a range of 10,000 miles. This is the Springsharp report:

Ger/CB/1911 Coal-fired boilers, Germany Battlecruiser laid down 1911 (Engine 1917)

Displacement:
 26,995 t light; 28,005 t standard; 35,000 t normal; 40,596 t full load

Dimensions: Length overall / water x beam x draught
 752.00 ft / 750.00 ft x 100.00 ft x 30.00 ft (normal load)
 229.21 m / 228.60 m x 30.48 m  x 9.14 m

Armament:
      6 - 12.00" / 305 mm guns (2x3 guns), 864.00lbs / 391.90kg shells, 1911 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, all forward, 1 raised mount - superfiring
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1911 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships, 2 raised mounts - superfiring
 Weight of broadside 6,048 lbs / 2,743 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 400.00 ft / 121.92 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 82 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  2.00" / 51 mm 400.00 ft / 121.92 m 30.00 ft / 9.14 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 5.00" / 127 mm  8.00" / 203 mm

   - Armour deck: 5.00" / 127 mm, Conning tower: 8.00" / 203 mm

Machinery:
 Coal fired boilers, steam turbines, 
 Direct drive, 4 shafts, 136,555 shp / 101,870 Kw = 30.00 kts
 Range 10,000nm at 18.00 kts
 Bunker at max displacement = 12,592 tons (100% coal)

Complement:
 1,279 - 1,663

Cost:
 £2.351 million / $9.403 million

Distribution of weights at normal displacement:
 Armament: 756 tons, 2.2 %
 Armour: 8,711 tons, 24.9 %
    - Belts: 1,823 tons, 5.2 %
    - Torpedo bulkhead: 888 tons, 2.5 %
    - Armament: 1,000 tons, 2.9 %
    - Armour Deck: 4,816 tons, 13.8 %
    - Conning Tower: 184 tons, 0.5 %
 Machinery: 5,506 tons, 15.7 %
 Hull, fittings & equipment: 12,021 tons, 34.3 %
 Fuel, ammunition & stores: 8,005 tons, 22.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   61,630 lbs / 27,955 Kg = 71.3 x 12.0 " / 305 mm shells or 9.0 torpedoes
 Stability (Unstable if below 1.00): 1.35
 Metacentric height 8.5 ft / 2.6 m
 Roll period: 14.4 seconds
 Steadiness - As gun platform (Average = 50 %): 74 %
   - Recoil effect (Restricted arc if above 1.00): 0.29
 Seaboat quality  (Average = 1.00): 1.47

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.544
 Length to Beam Ratio: 7.50 : 1
 'Natural speed' for length: 27.39 kts
 Power going to wave formation at top speed: 52 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 0.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  35.00 ft / 10.67 m
    - Forecastle (20 %): 25.00 ft / 7.62 m
    - Mid (50 %):  25.00 ft / 7.62 m
    - Quarterdeck (15 %): 25.00 ft / 7.62 m
    - Stern:  25.00 ft / 7.62 m
    - Average freeboard: 25.80 ft / 7.86 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 85.0 %
  - Above water (accommodation/working, high = better): 193.9 %
 Waterplane Area: 52,070 Square feet or 4,837 Square metres
 Displacement factor (Displacement / loading): 136 %
 Structure weight / hull surface area: 159 lbs/sq ft or 774 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.50
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily