Amazon Ad

Saturday, July 02, 2005

The smaller version of the Ger/CB/1911 design works as planned

I tried the 28,250 ton version of the Ger/CB/1911 design, and it works as planned. 30 knots is easily reached with the same armour and armament as the 34,500 ton version. in some respects, the smaller version is a better ship, given the superlatives in the Springsharp report:
Ger/CB/1911, Germany Battlecruiser laid down 1911 (Engine 1927)

Displacement:
 24,896 t light; 25,461 t standard; 28,250 t normal; 30,481 t full load

Dimensions: Length overall / water x beam x draught
 751.00 ft / 750.00 ft x 100.00 ft x 30.10 ft (normal load)
 228.90 m / 228.60 m x 30.48 m  x 9.17 m

Armament:
      6 - 12.00" / 305 mm guns (2x3 guns), 864.00lbs / 391.90kg shells, 1911 Model
   Breech loading guns in turrets (on barbettes)
   on centreline, all forward, 1 raised mount - superfiring
      8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1911 Model
   Quick firing guns in deck mounts with hoists
   on side, all forward, 2 raised mounts - superfiring
 Weight of broadside 6,048 lbs / 2,743 kg
 Shells per gun, main battery: 0

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 540.00 ft / 164.59 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 111 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 540.00 ft / 164.59 m 28.00 ft / 8.53 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 6.00" / 152 mm  8.00" / 203 mm
 2nd: 2.00" / 51 mm       -         -

   - Armour deck: 5.00" / 127 mm, Conning tower: 8.00" / 203 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 114,182 shp / 85,180 Kw = 30.00 kts
 Range 7,500nm at 18.00 kts
 Bunker at max displacement = 5,021 tons

Complement:
 1,089 - 1,416

Cost:
 £2.011 million / $8.044 million

Distribution of weights at normal displacement:
 Armament: 756 tons, 2.7 %
 Armour: 9,046 tons, 32.0 %
    - Belts: 2,294 tons, 8.1 %
    - Torpedo bulkhead: 1,119 tons, 4.0 %
    - Armament: 1,090 tons, 3.9 %
    - Armour Deck: 4,383 tons, 15.5 %
    - Conning Tower: 160 tons, 0.6 %
 Machinery: 3,604 tons, 12.8 %
 Hull, fittings & equipment: 11,489 tons, 40.7 %
 Fuel, ammunition & stores: 3,354 tons, 11.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   55,967 lbs / 25,386 Kg = 64.8 x 12.0 " / 305 mm shells or 9.8 torpedoes
 Stability (Unstable if below 1.00): 1.22
 Metacentric height 7.2 ft / 2.2 m
 Roll period: 15.7 seconds
 Steadiness - As gun platform (Average = 50 %): 83 %
   - Recoil effect (Restricted arc if above 1.00): 0.38
 Seaboat quality  (Average = 1.00): 1.66

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.438
 Length to Beam Ratio: 7.50 : 1
 'Natural speed' for length: 27.39 kts
 Power going to wave formation at top speed: 49 %
 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:  34.00 ft / 10.36 m
    - Forecastle (20 %): 25.00 ft / 7.62 m
    - Mid (50 %):  25.00 ft / 7.62 m
    - Quarterdeck (15 %): 25.00 ft / 7.62 m
    - Stern:  25.00 ft / 7.62 m
    - Average freeboard: 25.72 ft / 7.84 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 76.3 %
  - Above water (accommodation/working, high = better): 207.2 %
 Waterplane Area: 47,384 Square feet or 4,402 Square metres
 Displacement factor (Displacement / loading): 127 %
 Structure weight / hull surface area: 164 lbs/sq ft or 799 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.75
  - 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
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather

No comments:

Amazon Context Links