My September 8, 2001 version of the Ger/CB/1905 battleruiser

As part of my series of drawings from September 2001, I drew a German-looking Ger/CB/1905 battlecruiser. It was German-looking in the sense that the masts, tops, cased funnels and bridge were similar to what was used on German ships in 1912-1918. This ship was 700ft x 80ft x 24ft, and had a 19,000 ton normal displacement. The armor basis was just 4in, although the armament had 6in turrets and barbettes. The speed was a fast 31knots. The armament was 4-12in/45 and 12-4in QF guns. This works well in Springsharp with lightweight machinery. I extended the armor belt beyond the drawing to make use of the extra capacity in the design. This is the Springsharp report:

Ger/CB/1905, Germany Battlecruiser laid down 1905 (Engine 1910)

Displacement:
 16,397 t light; 16,952 t standard; 19,000 t normal; 20,638 t full load

Dimensions: Length overall / water x beam x draught
 701.00 ft / 700.00 ft x 80.00 ft x 24.00 ft (normal load)
 213.66 m / 213.36 m x 24.38 m  x 7.32 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: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 405.00 ft / 123.44 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 89 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 405.00 ft / 123.44 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, 105,177 shp / 78,462 Kw = 31.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 3,686 tons

Complement:
 808 - 1,051

Cost:
 £1.586 million / $6.342 million

Distribution of weights at normal displacement:
 Armament: 480 tons, 2.5 %
 Armour: 3,839 tons, 20.2 %
    - Belts: 1,184 tons, 6.2 %
    - Torpedo bulkhead: 539 tons, 2.8 %
    - Armament: 649 tons, 3.4 %
    - Armour Deck: 1,374 tons, 7.2 %
    - Conning Tower: 92 tons, 0.5 %
 Machinery: 4,346 tons, 22.9 %
 Hull, fittings & equipment: 7,732 tons, 40.7 %
 Fuel, ammunition & stores: 2,603 tons, 13.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   27,866 lbs / 12,640 Kg = 32.3 x 12.0 " / 305 mm shells or 3.5 torpedoes
 Stability (Unstable if below 1.00): 1.29
 Metacentric height 5.6 ft / 1.7 m
 Roll period: 14.2 seconds
 Steadiness - As gun platform (Average = 50 %): 75 %
   - Recoil effect (Restricted arc if above 1.00): 0.39
 Seaboat quality  (Average = 1.00): 1.51

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.495
 Length to Beam Ratio: 8.75 : 1
 'Natural speed' for length: 26.46 kts
 Power going to wave formation at top speed: 52 %
 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:  31.00 ft / 9.45 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (63 %):  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: 25.28 ft / 7.71 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 124.4 %
  - Above water (accommodation/working, high = better): 221.4 %
 Waterplane Area: 37,136 Square feet or 3,450 Square metres
 Displacement factor (Displacement / loading): 116 %
 Structure weight / hull surface area: 134 lbs/sq ft or 657 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.52
  - 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
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather