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Sunday, June 17, 2007

The Ger/CBL/1915 Mod.A with Springsharp 3.0b2 Beta

The Ger/CBL/1915 Mod.A design was intended to have inclined belt armour, so it greatly benefits from Springsharp 3.0b2 Beta. This is a photo of one of the ships:

This is a 40 knot ship designed to run down lesser ships and put two quick 12in rounds into them. It can outrun anything that could outfight it. It does have a substantial secondary armament of 6in QF guns. The protection is intended to allow it to fight cruisers successfully. I was able to provide a 1in torpedo bulkhead that was not feasible with Springsharp 3.0b1 Beta, or it seemed like it was not, at least. This is the Springsharp report:
Ger/CBL/1915 Mod.A, Germany Light Battlecruiser laid down 1915 (Engine 1950)

Displacement:
 22,190 t light; 22,948 t standard; 24,576 t normal; 25,878 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (807.19 ft / 800.00 ft) x 80.00 ft x (24.00 / 25.01 ft)
 (246.03 m / 243.84 m) x 24.38 m  x (7.32 / 7.62 m)

Armament:
      2 - 12.00" / 305 mm 50.0 cal guns - 915.00lbs / 415.04kg shells, 150 per gun
   Breech loading guns in turret on barbette mount, 1915 Model
   1 x Single mount on centreline, forward deck centre
      12 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 150 per gun
   Quick firing guns in deck and hoist mount, 1915 Model
   1 x Single mount on sides, forward deck aft
      Weight of broadside 3,202 lbs / 1,452 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 590.00 ft / 179.83 m 12.00 ft / 3.66 m
 Ends: Unarmoured
   Main Belt covers 113 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.00" / 25 mm 590.00 ft / 179.83 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: 3.00" / 76 mm 2.00" / 51 mm  3.00" / 76 mm

   - Protected deck - single deck: 2.00" / 51 mm For and Aft decks

   - Conning towers: Forward 6.00" / 152 mm,  Aft 0.00" / 0 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 6 shafts, 332,799 shp / 248,268 Kw = 40.00 kts
 Range 5,600nm at 18.00 kts
 Bunker at max displacement = 2,930 tons

Complement:
 980 - 1,275

Cost:
 £3.236 million / $12.946 million

Distribution of weights at normal displacement:
 Armament: 849 tons, 3.5 %
 Armour: 3,450 tons, 14.0 %
    - Belts: 1,144 tons, 4.7 %
    - Torpedo bulkhead: 524 tons, 2.1 %
    - Armament: 364 tons, 1.5 %
    - Armour Deck: 1,309 tons, 5.3 %
    - Conning Tower: 109 tons, 0.4 %
 Machinery: 7,962 tons, 32.4 %
 Hull, fittings & equipment: 9,930 tons, 40.4 %
 Fuel, ammunition & stores: 2,386 tons, 9.7 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   24,616 lbs / 11,165 Kg = 28.5 x 12.0 " / 305 mm shells or 2.6 torpedoes
 Stability (Unstable if below 1.00): 1.21
 Metacentric height 5.1 ft / 1.6 m
 Roll period: 14.9 seconds
 Steadiness - As gun platform (Average = 50 %): 54 %
   - Recoil effect (Restricted arc if above 1.00): 0.33
 Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
 Hull has rise forward of midbreak,
   an extended bulbous bow and a cruiser stern
 Block coefficient (normal/deep): 0.560 / 0.566
 Length to Beam Ratio: 10.00 : 1
 'Natural speed' for length: 28.28 kts
 Power going to wave formation at top speed: 62 %
 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: 25.00 %,  37.00 ft / 11.28 m,  32.00 ft / 9.75 m
    - Forward deck: 38.00 %,  32.00 ft / 9.75 m,  32.00 ft / 9.75 m
    - Aft deck: 22.00 %,  24.00 ft / 7.32 m,  24.00 ft / 7.32 m
    - Quarter deck: 15.00 %,  24.00 ft / 7.32 m,  24.00 ft / 7.32 m
    - Average freeboard:  29.54 ft / 9.00 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 156.9 %
  - Above water (accommodation/working, high = better): 254.7 %
 Waterplane Area: 45,086 Square feet or 4,189 Square metres
 Displacement factor (Displacement / loading): 109 %
 Structure weight / hull surface area: 140 lbs/sq ft or 684 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.94
  - Longitudinal: 1.67
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent

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