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Tuesday, April 17, 2007

The 14in gunned version of the Ger/CB/1937

I have a large family of designs centered around my goofy freehand drawing from 8 years ago:

The 14in gunned version is a bit larger than the version with 12in guns. The dimensions are now 754ft x 104ft x 28ft. The other specs are the same, except that the main armament has 14in/50 guns. This is the Springsharp report:
Ger/CB/1937 a1 14in guns, Germany Battlecruiser laid down 1937 (Engine 1941)

Displacement:
 34,413 t light; 35,970 t standard; 37,765 t normal; 39,201 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (760.05 ft / 754.00 ft) x 104.00 ft x (28.00 / 28.87 ft)
 (231.66 m / 229.82 m) x 31.70 m  x (8.53 / 8.80 m)

Armament:
      9 - 14.00" / 356 mm 50.0 cal guns - 1,452.45lbs / 658.82kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts , 1937 Model
   3 x Triple mounts on centreline ends, majority forward
  1 raised mount - superfiring
      12 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 150 per gun
   Quick firing guns in turret on barbette mounts , 1937 Model
   6 x Twin mounts on sides, forward deck aft
      12 - 4.00" / 102 mm 50.0 cal guns - 33.88lbs / 15.37kg shells, 150 per gun
   Anti-air guns in deck and hoist mounts , 1937 Model
   6 x Twin mounts on sides, forward deck aft
  6 raised mounts
 Weight of broadside 14,851 lbs / 14,851 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 11.0" / 279 mm 485.00 ft / 147.83 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 8.00" / 203 mm 485.00 ft / 147.83 m 8.00 ft / 2.44 m
   Main Belt covers 99 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 485.00 ft / 147.83 m 28.00 ft / 8.53 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 11.0" / 279 mm 7.00" / 178 mm  11.0" / 279 mm
 2nd: 5.00" / 127 mm 4.00" / 102 mm  5.00" / 127 mm
 3rd: 1.00" / 25 mm       -   1.00" / 25 mm

   - Armour deck: 5.00" / 127 mm, Conning tower: 11.00" / 279 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 168,751 shp / 125,888 Kw = 31.00 kts
 Range 6,500nm at 15.00 kts
 Bunker at max displacement = 3,231 tons

Complement:
 1,353 - 1,760

Cost:
 £18.388 million / $73.550 million

Distribution of weights at normal displacement:
 Armament: 2,914 tons, 7.7 %
 Armour: 12,620 tons, 33.4 %
    - Belts: 3,189 tons, 8.4 %
    - Torpedo bulkhead: 1,005 tons, 2.7 %
    - Armament: 2,844 tons, 7.5 %
    - Armour Deck: 5,315 tons, 14.1 %
    - Conning Tower: 267 tons, 0.7 %
 Machinery: 4,460 tons, 11.8 %
 Hull, fittings & equipment: 15,497 tons, 41.0 %
 Fuel, ammunition & stores: 3,352 tons, 8.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   55,343 lbs / 25,103 Kg = 40.3 x 14.0 " / 356 mm shells or 8.1 torpedoes
 Stability (Unstable if below 1.00): 1.18
 Metacentric height 7.2 ft / 2.2 m
 Roll period: 16.3 seconds
 Steadiness - As gun platform (Average = 50 %): 51 %
   - Recoil effect (Restricted arc if above 1.00): 0.55
 Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
 Hull has a flush deck,
   a normal bow and a cruiser stern
 Block coefficient (normal/deep): 0.602 / 0.606
 Length to Beam Ratio: 7.25 : 1
 'Natural speed' for length: 27.46 kts
 Power going to wave formation at top speed: 56 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 7.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 20.00 %,  33.00 ft / 10.06 m,  26.00 ft / 7.92 m
    - Forward deck: 30.00 %,  26.00 ft / 7.92 m,  23.00 ft / 7.01 m
    - Aft deck: 35.00 %,  23.00 ft / 7.01 m,  23.00 ft / 7.01 m
    - Quarter deck: 15.00 %,  23.00 ft / 7.01 m,  23.00 ft / 7.01 m
    - Average freeboard:  24.61 ft / 7.50 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 93.1 %
  - Above water (accommodation/working, high = better): 191.7 %
 Waterplane Area: 57,459 Square feet or 5,338 Square metres
 Displacement factor (Displacement / loading): 104 %
 Structure weight / hull surface area: 195 lbs/sq ft or 954 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.97
  - Longitudinal: 1.33
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent

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