Superpancernik Invincible (1880) - 04.06.2010

Superpancernik (w pewnym sensie – protoplasta drednotów) brytyjski z XIX w., zainspirowany tymi rysunkami znalezionym na forum http://www.phpbbplanet.com/warshipprojects/viewtopic.php?t=352&mforum=warshipprojects

  

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Projekt generalnie bazuje na Inflexible, dodałem 2 wieże z działami 406 mm na dziobie i rufie i generalnie powiększyłem okręt. Niestety,nie udało się uniknąć odchudzenia pancerza – chciałem jak najgrubszy (ze względu na potencjalną przebijalność dział 450 mm Duilio, wynoszącą 560 mm) ale nie dało się więcej jak 584 mm (A i tak jednostka do pełnomorskiego pływania na dłuższą metę się wg springsharpa nie nadaje). Co ciekawe, dalsze odchudzanie pancerza dawałoby nawet wzrost odporności na trafienia dział mniejszego niż 450mm kalibru, ale niżej z założenia zejść nie mogłem.   

Invincible, british battleship laid down 1877 (Engine 1880)

Displacement:
    16 518 t light; 17 345 t standard; 18 400 t normal; 19 244 t full load

Dimensions: Length overall / water x beam x draught
    395,34 ft / 393,70 ft x 83,66 ft x 28,54 ft (normal load)
    120,50 m / 120,00 m x 25,50 m  x 8,70 m

Armament:
      4 - 15,98" / 406 mm guns (2x2 guns), 1 643,79lbs / 745,61kg shells, 1877 Model
      Muzzle loading guns in Coles/Ericsson turrets
      on centreline ends, evenly spread
      4 - 15,98" / 406 mm guns (2x2 guns), 1 643,78lbs / 745,61kg shells, 1877 Model
      Muzzle loading guns in Coles/Ericsson turrets
      on side, all amidships
      8 - 3,74" / 95,0 mm guns in single mounts, 21,06lbs / 9,55kg shells, 1877 Model
      Breech loading guns in deck mounts
      on side, evenly spread
    Weight of broadside 13 319 lbs / 6 041 kg
    Shells per gun, main battery: 60

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    23,0" / 584 mm    137,80 ft / 42,00 m    7,55 ft / 2,30 m
    Ends:    Unarmoured
      Main Belt covers 54% of normal length
      Main belt does not fully cover magazines and engineering spaces

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    16,5" / 419 mm          -                  -
    2nd:    16,5" / 419 mm          -                  -

   - Armour deck: 2,17" / 55 mm, Conning tower: 12,99" / 330 mm

Machinery:
    Coal fired boilers, simple reciprocating steam engines,
    Direct drive, 2 shafts, 9 298 ihp / 6 936 Kw = 15,00 kts
    Range 4 000nm at 9,00 kts
    Bunker at max displacement = 1 898 tons (100% coal)

Complement:
    789 - 1 026

Cost:
    £2,246 million / $8,982 million

Distribution of weights at normal displacement:
    Armament: 1 665 tons, 9,0%
    Armour: 6 052 tons, 32,9%
       - Belts: 1 354 tons, 7,4%
       - Torpedo bulkhead: 0 tons, 0,0%
       - Armament: 3 459 tons, 18,8%
       - Armour Deck: 1 043 tons, 5,7%
       - Conning Tower: 195 tons, 1,1%
    Machinery: 1 921 tons, 10,4%
    Hull, fittings & equipment: 6 881 tons, 37,4%
    Fuel, ammunition & stores: 1 882 tons, 10,2%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      9 282 lbs / 4 210 Kg = 5,6 x 16,0 " / 406 mm shells or 1,5 torpedoes
    Stability (Unstable if below 1.00): 1,13
    Metacentric height 4,8 ft / 1,5 m
    Roll period: 16,0 seconds
    Steadiness    - As gun platform (Average = 50 %): 32 %
            - Recoil effect (Restricted arc if above 1.00): 0,56
    Seaboat quality  (Average = 1.00): 0,80

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,685
    Length to Beam Ratio: 4,71 : 1
    'Natural speed' for length: 19,84 kts
    Power going to wave formation at top speed: 43 %
    Trim (Max stability = 0, Max steadiness = 100): 26
    Bow angle (Positive = bow angles forward): -8,00 degrees
    Stern overhang: 1,64 ft / 0,50 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        13,12 ft / 4,00 m
       - Forecastle (20%):    13,12 ft / 4,00 m
       - Mid (50%):        13,12 ft / 4,00 m
       - Quarterdeck (15%):    13,12 ft / 4,00 m
       - Stern:        13,12 ft / 4,00 m
       - Average freeboard:    13,12 ft / 4,00 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 99,7%
        - Above water (accommodation/working, high = better): 82,5%
    Waterplane Area: 26 048 Square feet or 2 420 Square metres
    Displacement factor (Displacement / loading): 79%
    Structure weight / hull surface area: 197 lbs/sq ft or 964 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0,70
        - Longitudinal: 1,77
        - Overall: 0,77
    Caution: Hull subject to strain in open-sea
    Hull space for machinery, storage, compartmentation is adequate
    Room for accommodation and workspaces is cramped
    Poor seaboat, wet and uncomfortable, reduced performance in heavy weather