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Armstrong

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  1. Armstrong design, Greece Battleship laid down 1911
  2.  
  3. Displacement:
  4.     11,228 t light; 12,165 t standard; 13,500 t normal; 14,568 t full load
  5.  
  6. Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
  7.     (430.33 ft / 426.51 ft) x 82.02 ft x (23.95 / 25.46 ft)
  8.     (131.16 m / 130.00 m) x 25.00 m  x (7.30 / 7.76 m)
  9.  
  10. Armament:
  11.       4 - 17.72" / 450 mm 20.5 cal guns - 2,239.15lbs / 1,015.66kg shells, 80 per gun
  12.       Muzzle loading guns in deck mounts, 1877 Model
  13.       2 x Twin mounts on centreline, evenly spread
  14.       24 - 5.98" / 152 mm 50.0 cal guns - 113.44lbs / 51.45kg shells, 150 per gun
  15.       Breech loading guns in casemate mounts, 1911 Model
  16.       24 x Single mounts on centreline, evenly spread
  17.       16 - 4.02" / 102 mm 50.0 cal guns - 31.00lbs / 14.06kg shells, 150 per gun
  18.       Breech loading guns in deck mounts, 1904 Model
  19.       16 x Single mounts on sides, evenly spread
  20.       20 - 0.30" / 7.7 mm 8.7 cal guns - 0.01lbs / 0.01kg shells, 5,000 per gun
  21.       Machine guns in deck mounts, 1884 Model
  22.       20 x Single mounts on centreline, evenly spread
  23.       Weight of broadside 12,175 lbs / 5,523 kg
  24.  
  25. Armour:
  26.    - Belts:     Width (max) Length (avg)        Height (avg)
  27.     Main:   5.98" / 152 mm  280.25 ft / 85.42 m 21.65 ft / 6.60 m
  28.     Ends:   5.98" / 152 mm  146.26 ft / 44.58 m 15.09 ft / 4.60 m
  29.     Upper:  1.50" / 38 mm   280.25 ft / 85.42 m 10.83 ft / 3.30 m
  30.       Main Belt covers 101 % of normal length
  31.       Main Belt inclined 60.00 degrees (positive = in)
  32.  
  33.    - Torpedo Bulkhead - Strengthened structural bulkheads:
  34.         2.99" / 76 mm   492.13 ft / 150.00 m    23.95 ft / 7.30 m
  35.     Beam between torpedo bulkheads 65.62 ft / 20.00 m
  36.  
  37.    - Gun armour:    Face (max)  Other gunhouse (avg)    Barbette/hoist (max)
  38.     Main:   12.0" / 305 mm  7.01" / 178 mm      5.98" / 152 mm
  39.     2nd:    5.98" / 152 mm        -               -
  40.  
  41.    - Protected deck - single deck:
  42.     For and Aft decks: 1.97" / 50 mm
  43.     Forecastle: 1.97" / 50 mm  Quarter deck: 1.97" / 50 mm
  44.  
  45.    - Conning towers: Forward 10.00" / 254 mm, Aft 0.00" / 0 mm
  46.  
  47. Machinery:
  48.     Coal and oil fired boilers, steam turbines,
  49.     Direct drive, 4 shafts, 49,005 shp / 36,558 Kw = 25.00 kts
  50.     Range 10,000nm at 10.00 kts
  51.     Bunker at max displacement = 2,403 tons (100% coal)
  52.  
  53. Complement:
  54.     626 - 814
  55.  
  56. Cost:
  57.     £1.062 million / $4.247 million
  58.  
  59. Distribution of weights at normal displacement:
  60.     Armament: 917 tons, 6.8 %
  61.        - Guns: 917 tons, 6.8 %
  62.     Armour: 5,383 tons, 39.9 %
  63.        - Belts: 2,324 tons, 17.2 %
  64.        - Torpedo bulkhead: 1,305 tons, 9.7 %
  65.        - Armament: 724 tons, 5.4 %
  66.        - Armour Deck: 908 tons, 6.7 %
  67.        - Conning Tower: 122 tons, 0.9 %
  68.     Machinery: 2,188 tons, 16.2 %
  69.     Hull, fittings & equipment: 2,740 tons, 20.3 %
  70.     Fuel, ammunition & stores: 2,272 tons, 16.8 %
  71.     Miscellaneous weights: 0 tons, 0.0 %
  72.  
  73. Overall survivability and seakeeping ability:
  74.     Survivability (Non-critical penetrating hits needed to sink ship):
  75.       22,442 lbs / 10,179 Kg = 8.1 x 17.7 " / 450 mm shells or 4.1 torpedoes
  76.     Stability (Unstable if below 1.00): 1.90
  77.     Metacentric height 10.4 ft / 3.2 m
  78.     Roll period: 10.7 seconds
  79.     Steadiness  - As gun platform (Average = 50 %): 52 %
  80.             - Recoil effect (Restricted arc if above 1.00): 0.29
  81.     Seaboat quality  (Average = 1.00): 1.03
  82.  
  83. Hull form characteristics:
  84.     Hull has raised forecastle, low quarterdeck ,
  85.       a normal bow and a cruiser stern
  86.     Block coefficient (normal/deep): 0.564 / 0.572
  87.     Length to Beam Ratio: 5.20 : 1
  88.     'Natural speed' for length: 20.65 kts
  89.     Power going to wave formation at top speed: 63 %
  90.     Trim (Max stability = 0, Max steadiness = 100): 50
  91.     Bow angle (Positive = bow angles forward): 10.00 degrees
  92.     Stern overhang: -9.84 ft / -3.00 m
  93.     Freeboard (% = length of deck as a percentage of waterline length):
  94.                 Fore end,    Aft end
  95.        - Forecastle:    20.00 %,  21.65 ft / 6.60 m,  21.65 ft / 6.60 m
  96.        - Forward deck:  30.00 %,  18.37 ft / 5.60 m,  18.37 ft / 5.60 m
  97.        - Aft deck:  35.00 %,  18.37 ft / 5.60 m,  18.37 ft / 5.60 m
  98.        - Quarter deck:  15.00 %,  15.09 ft / 4.60 m,  15.09 ft / 4.60 m
  99.        - Average freeboard:     18.54 ft / 5.65 m
  100.     Ship tends to be wet forward
  101.  
  102. Ship space, strength and comments:
  103.     Space   - Hull below water (magazines/engines, low = better): 101.1 %
  104.         - Above water (accommodation/working, high = better): 138.3 %
  105.     Waterplane Area: 24,736 Square feet or 2,298 Square metres
  106.     Displacement factor (Displacement / loading): 102 %
  107.     Structure weight / hull surface area: 131 lbs/sq ft or 638 Kg/sq metre
  108.     Hull strength (Relative):
  109.         - Cross-sectional: 0.90
  110.         - Longitudinal: 2.55
  111.         - Overall: 1.00
  112.     Adequate machinery, storage, compartmentation space
  113.     Excellent accommodation and workspace room
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