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Monday, October 17, 2005

An even larger Ger/CB/1943 battlecruiser

The only advantage to what I am calling the Ger/CB/1943 design is that it has a 14in belt and main armament protection. One of the 12in belt Ger/CB/1942 designs could reach 37 knots. This can comfortably reach 35 knots, and has a 9,000 nm range at 15 knots. This is the Springsharp report:
Ger/CB/1943, Germany Battlecruiser laid down 1943

Displacement:
 114,942 t light; 119,679 t standard; 125,000 t normal; 129,257 t full load

Dimensions: Length overall / water x beam x draught
 1,254.66 ft / 1,250.00 ft x 156.00 ft x 37.00 ft (normal load)
 382.42 m / 381.00 m x 47.55 m  x 11.28 m

Armament:
      9 - 21.00" / 533 mm guns (3x3 guns), 4,630.50lbs / 2,100.36kg shells, 1943 Model
   Breech loading guns in turrets (on barbettes)
   on side ends, majority forward, 1 raised mount - superfiring
      18 - 6.00" / 152 mm guns (6x3 guns), 108.00lbs / 48.99kg shells, 1943 Model
   Quick firing guns in turrets (on barbettes)
   on side, all amidships
      18 - 4.00" / 102 mm guns (6x3 guns), 32.00lbs / 14.51kg shells, 1943 Model
   Anti-aircraft guns in turrets (on barbettes)
   on side ends, evenly spread, all raised mounts - superfiring
      24 - 1.57" / 40.0 mm guns (6x4 guns), 1.95lbs / 0.89kg shells, 1943 Model
   Anti-aircraft guns in deck mounts 
   on side, evenly spread, 2 raised mounts
 Weight of broadside 44,241 lbs / 20,068 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 14.0" / 356 mm 800.00 ft / 243.84 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 98 % of normal length

   - Torpedo Bulkhead:
  4.00" / 102 mm 800.00 ft / 243.84 m 36.00 ft / 10.97 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 14.0" / 356 mm 11.0" / 279 mm  14.0" / 356 mm
 2nd: 6.00" / 152 mm 6.00" / 152 mm  6.00" / 152 mm
 3rd: 1.00" / 25 mm 1.00" / 25 mm  1.00" / 25 mm
 4th: 1.00" / 25 mm       -         -

   - Armour deck: 7.00" / 178 mm, Conning tower: 14.00" / 356 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 8 shafts, 474,148 shp / 353,714 Kw = 35.00 kts
 Range 9,000nm at 15.00 kts
 Bunker at max displacement = 9,578 tons

Complement:
 3,323 - 4,321

Cost:
 £67.959 million / $271.838 million

Distribution of weights at normal displacement:
 Armament: 5,530 tons, 4.4 %
 Armour: 38,575 tons, 30.9 %
    - Belts: 8,158 tons, 6.5 %
    - Torpedo bulkhead: 4,262 tons, 3.4 %
    - Armament: 6,821 tons, 5.5 %
    - Armour Deck: 18,580 tons, 14.9 %
    - Conning Tower: 754 tons, 0.6 %
 Machinery: 12,246 tons, 9.8 %
 Hull, fittings & equipment: 58,592 tons, 46.9 %
 Fuel, ammunition & stores: 10,058 tons, 8.0 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   208,422 lbs / 94,538 Kg = 45.0 x 21.0 " / 533 mm shells or 41.0 torpedoes
 Stability (Unstable if below 1.00): 1.29
 Metacentric height 15.5 ft / 4.7 m
 Roll period: 16.7 seconds
 Steadiness - As gun platform (Average = 50 %): 56 %
   - Recoil effect (Restricted arc if above 1.00): 0.36
 Seaboat quality  (Average = 1.00): 1.11

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.606
 Length to Beam Ratio: 8.01 : 1
 'Natural speed' for length: 35.36 kts
 Power going to wave formation at top speed: 47 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 4.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  38.00 ft / 11.58 m
    - Forecastle (20 %): 28.00 ft / 8.53 m
    - Mid (50 %):  28.00 ft / 8.53 m
    - Quarterdeck (15 %): 28.00 ft / 8.53 m
    - Stern:  28.00 ft / 8.53 m
    - Average freeboard: 28.80 ft / 8.78 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 75.0 %
  - Above water (accommodation/working, high = better): 230.3 %
 Waterplane Area: 143,471 Square feet or 13,329 Square metres
 Displacement factor (Displacement / loading): 116 %
 Structure weight / hull surface area: 318 lbs/sq ft or 1,554 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 1.21
  - Longitudinal: 0.94
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent

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