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Friday, October 07, 2005

The real Ger/CB/1937 14in still works pretty well

The real Ger/CB/1937 14in specification works well in Springsharp. The only knock on it is that it "tends to be wet forward". I converted the 15in Springsharp to the 14in version, and found that it worked "out of the box". I reduced the belt length, as it was longer than needed and raised the freeboard. That necessitated reducing the range. That may have been a waste, as I did not change the "wet forward" complaint. This is the Springsharp report:
Ger/CB/1937 14in, Germany Battlecruiser laid down 1937

Displacement:
 31,676 t light; 33,079 t standard; 34,767 t normal; 36,118 t full load

Dimensions: Length overall / water x beam x draught
 757.52 ft / 754.00 ft x 104.00 ft x 28.00 ft (normal load)
 230.89 m / 229.82 m x 31.70 m  x 8.53 m

Armament:
      9 - 14.00" / 356 mm guns (3x3 guns), 1,372.00lbs / 622.33kg shells, 1937 Model
   Breech loading guns in turrets (on barbettes)
   on centreline ends, majority forward, 1 raised mount - superfiring
      24 - 5.00" / 127 mm guns (12x2 guns), 62.50lbs / 28.35kg shells, 1937 Model
   Dual purpose guns in turrets (on barbettes)
   on side, all amidships
 Weight of broadside 13,848 lbs / 6,281 kg
 Shells per gun, main battery: 90

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 12.0" / 305 mm 500.00 ft / 152.40 m 17.00 ft / 5.18 m
 Ends: Unarmoured
   Main Belt covers 102 % of normal length

   - Torpedo Bulkhead:
  2.00" / 51 mm 500.00 ft / 152.40 m 28.00 ft / 8.53 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 12.0" / 305 mm 8.00" / 203 mm  12.0" / 305 mm
 2nd: 5.00" / 127 mm 5.00" / 127 mm  5.00" / 127 mm

   - Armour deck: 4.00" / 102 mm, Conning tower: 12.00" / 305 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 104,863 shp / 78,228 Kw = 28.00 kts
 Range 6,250nm at 15.00 kts
 Bunker at max displacement = 3,039 tons

Complement:
 1,272 - 1,654

Cost:
 £16.198 million / $64.791 million

Distribution of weights at normal displacement:
 Armament: 1,731 tons, 5.0 %
 Armour: 12,968 tons, 37.3 %
    - Belts: 4,373 tons, 12.6 %
    - Torpedo bulkhead: 1,036 tons, 3.0 %
    - Armament: 3,219 tons, 9.3 %
    - Armour Deck: 4,066 tons, 11.7 %
    - Conning Tower: 275 tons, 0.8 %
 Machinery: 2,906 tons, 8.4 %
 Hull, fittings & equipment: 14,070 tons, 40.5 %
 Fuel, ammunition & stores: 3,091 tons, 8.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   54,678 lbs / 24,802 Kg = 39.9 x 14.0 " / 356 mm shells or 9.4 torpedoes
 Stability (Unstable if below 1.00): 1.16
 Metacentric height 7.0 ft / 2.1 m
 Roll period: 16.6 seconds
 Steadiness - As gun platform (Average = 50 %): 57 %
   - Recoil effect (Restricted arc if above 1.00): 0.47
 Seaboat quality  (Average = 1.00): 1.15

Hull form characteristics:
 Hull has a flush deck
 Block coefficient: 0.554
 Length to Beam Ratio: 7.25 : 1
 'Natural speed' for length: 27.46 kts
 Power going to wave formation at top speed: 49 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 3.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  29.00 ft / 8.84 m
    - Forecastle (20 %): 20.00 ft / 6.10 m
    - Mid (50 %):  20.00 ft / 6.10 m
    - Quarterdeck (15 %): 20.00 ft / 6.10 m
    - Stern:  20.00 ft / 6.10 m
    - Average freeboard: 20.72 ft / 6.32 m
 Ship tends to be wet forward

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 80.3 %
  - Above water (accommodation/working, high = better): 164.5 %
 Waterplane Area: 54,942 Square feet or 5,104 Square metres
 Displacement factor (Displacement / loading): 107 %
 Structure weight / hull surface area: 190 lbs/sq ft or 930 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.98
  - Longitudinal: 1.14
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent

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