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Tuesday, April 24, 2007

This variant type, the Ger/CB/1935 family, this version with 12in guns

There is this alternative family of designs, also dating from early 1999, that is called the Ger/CB/1935. This is the version with 9-12in/50 BLR, 12-6in QF, 12-4in AA, and 32-37mm AA guns. I am not trying to be realistic, as I like to use the English caliber guns, rather than the more usual metric (5.9in and 4.1in). This is the Springsharp design:
Ger/CB/1935, Germany Battlecruiser laid down 1935

Displacement:
 27,103 t light; 28,552 t standard; 30,531 t normal; 32,114 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (750.22 ft / 741.00 ft) x 98.00 ft x (27.00 / 28.10 ft)
 (228.67 m / 225.86 m) x 29.87 m  x (8.23 / 8.56 m)

Armament:
      9 - 12.00" / 305 mm 50.0 cal guns - 915.00lbs / 415.04kg shells, 150 per gun
   Breech loading guns in turret on barbette mounts , 1935 Model
   3 x Triple mounts on centreline ends, majority forward
  1 raised mount - superfiring
      12 - 6.00" / 152 mm 55.0 cal guns - 115.00lbs / 52.16kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts , 1935 Model
   12 x Single mounts on sides, evenly spread
      12 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun
   Anti-air guns in deck mount , 1935 Model
   1 x Single mount on sides amidships
      32 - 1.46" / 37.0 mm 60.0 cal guns - 1.69lbs / 0.77kg shells, 150 per gun
   Anti-air guns in deck mounts , 1935 Model
   8 x Single mounts on sides, evenly spread
  7 raised mounts
 Weight of broadside 10,056 lbs / 10,056 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 11.0" / 279 mm 455.00 ft / 138.68 m 8.00 ft / 2.44 m
 Ends: Unarmoured
 Upper: 8.00" / 203 mm 455.00 ft / 138.68 m 8.00 ft / 2.44 m
   Main Belt covers 94 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 455.00 ft / 138.68 m 27.00 ft / 8.23 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 11.0" / 279 mm 8.00" / 203 mm  11.0" / 279 mm
 2nd: 4.00" / 102 mm 1.00" / 25 mm  4.00" / 102 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 11.00" / 279 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 96,485 shp / 71,978 Kw = 28.00 kts
 Range 8,000nm at 15.00 kts
 Bunker at max displacement = 3,562 tons

Complement:
 1,154 - 1,501

Cost:
 £12.071 million / $48.286 million

Distribution of weights at normal displacement:
 Armament: 2,171 tons, 7.1 %
 Armour: 10,782 tons, 35.3 %
    - Belts: 2,997 tons, 9.8 %
    - Torpedo bulkhead: 1,818 tons, 6.0 %
    - Armament: 2,003 tons, 6.6 %
    - Armour Deck: 3,733 tons, 12.2 %
    - Conning Tower: 231 tons, 0.8 %
 Machinery: 2,741 tons, 9.0 %
 Hull, fittings & equipment: 12,343 tons, 40.4 %
 Fuel, ammunition & stores: 3,428 tons, 11.2 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   57,770 lbs / 26,204 Kg = 66.9 x 12.0 " / 305 mm shells or 10.8 torpedoes
 Stability (Unstable if below 1.00): 1.19
 Metacentric height 6.7 ft / 2.0 m
 Roll period: 16.0 seconds
 Steadiness - As gun platform (Average = 50 %): 75 %
   - Recoil effect (Restricted arc if above 1.00): 0.56
 Seaboat quality  (Average = 1.00): 1.49

Hull form characteristics:
 Hull has a flush deck,
   a normal bow and a cruiser stern
 Block coefficient (normal/deep): 0.545 / 0.551
 Length to Beam Ratio: 7.56 : 1
 'Natural speed' for length: 27.22 kts
 Power going to wave formation at top speed: 48 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 11.00 degrees
 Stern overhang: 3.00 ft / 0.91 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 20.00 %,  32.00 ft / 9.75 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: 30.00 %,  23.00 ft / 7.01 m,  24.00 ft / 7.32 m
    - Quarter deck: 20.00 %,  24.00 ft / 7.32 m,  25.00 ft / 7.62 m
    - Average freeboard:  24.98 ft / 7.61 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 77.0 %
  - Above water (accommodation/working, high = better): 199.8 %
 Waterplane Area: 50,443 Square feet or 4,686 Square metres
 Displacement factor (Displacement / loading): 117 %
 Structure weight / hull surface area: 172 lbs/sq ft or 838 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.42
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily

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