The 2002 version of the Ger/CB/1905 design

I did a series of drawings in the summer of 2002 for the British and German ships in our 1971 building program game. One was the Ger/CB/1905 battlecruiser. I tried to see what could be done in Springsharp, and the design worked pretty well with 17.6 SHP/ton of machinery weight. I followed the original concept and used oil fuel. To achieve that, the machinery date is 1907. This is the Springsharp report:

Ger/CB/1905 2002 version, Germany Battlecruiser laid down 1905 (Engine 1907)

Displacement:
 18,478 t light; 19,100 t standard; 21,250 t normal; 22,970 t full load

Dimensions: Length overall / water x beam x draught
 700.00 ft / 700.00 ft x 80.00 ft x 24.40 ft (normal load)
 213.36 m / 213.36 m x 24.38 m  x 7.44 m

Armament:
      4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1905 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, evenly spread
      12 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
   Quick firing guns in casemate mounts 
   on side, all amidships
 Weight of broadside 3,840 lbs / 1,742 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 350.00 ft / 106.68 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 77 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 350.00 ft / 106.68 m 24.00 ft / 7.32 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: 4.00" / 102 mm 4.00" / 102 mm  4.00" / 102 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 115,187 shp / 85,929 Kw = 31.00 kts
 Range 5,400nm at 15.00 kts
 Bunker at max displacement = 3,871 tons

Complement:
 879 - 1,144

Cost:
 £1.966 million / $7.865 million

Distribution of weights at normal displacement:
 Armament: 480 tons, 2.3 %
 Armour: 3,645 tons, 17.2 %
    - Belts: 993 tons, 4.7 %
    - Torpedo bulkhead: 466 tons, 2.2 %
    - Armament: 649 tons, 3.1 %
    - Armour Deck: 1,438 tons, 6.8 %
    - Conning Tower: 99 tons, 0.5 %
 Machinery: 6,545 tons, 30.8 %
 Hull, fittings & equipment: 7,808 tons, 36.7 %
 Fuel, ammunition & stores: 2,772 tons, 13.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   20,423 lbs / 9,264 Kg = 23.6 x 12.0 " / 305 mm shells or 2.4 torpedoes
 Stability (Unstable if below 1.00): 1.37
 Metacentric height 6.2 ft / 1.9 m
 Roll period: 13.5 seconds
 Steadiness - As gun platform (Average = 50 %): 68 %
   - Recoil effect (Restricted arc if above 1.00): 0.31
 Seaboat quality  (Average = 1.00): 1.36

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.544
 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): -1.00 degrees
 Stern overhang: -1.00 ft / -0.30 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  33.00 ft / 10.06 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (50 %):  28.00 ft / 8.53 m (20.00 ft / 6.10 m aft of break)
    - Quarterdeck (15 %): 20.00 ft / 6.10 m
    - Stern:  20.00 ft / 6.10 m
    - Average freeboard: 24.40 ft / 7.44 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 155.7 %
  - Above water (accommodation/working, high = better): 199.6 %
 Waterplane Area: 38,874 Square feet or 3,612 Square metres
 Displacement factor (Displacement / loading): 103 %
 Structure weight / hull surface area: 132 lbs/sq ft or 644 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.33
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Good seaboat, rides out heavy weather easily