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BA-98 Pre-Dreadnought Battleship

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Jan 29th, 2020
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  1. BA-98, DMO Pre-Dreadnought Battleship laid down 1898
  2.  
  3. Displacement:
  4. 13,359 t light; 14,034 t standard; 15,211 t normal; 16,153 t full load
  5.  
  6. Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
  7. (426.51 ft / 426.51 ft) x 78.74 ft x (26.25 / 27.58 ft)
  8. (130.00 m / 130.00 m) x 24.00 m x (8.00 / 8.41 m)
  9.  
  10. Armament:
  11. 4 - 11.81" / 300 mm 50.0 cal guns - 881.85lbs / 400.00kg shells, 150 per gun
  12. Breech loading guns in turret on barbette mounts, 1898 Model
  13. 2 x 2-gun mounts on centreline ends, evenly spread
  14. 8 - 5.91" / 150 mm 45.0 cal guns - 110.23lbs / 50.00kg shells, 150 per gun
  15. Quick firing guns in turret on barbette mounts, 1898 Model
  16. 4 x Twin mounts on sides, evenly spread
  17. 4 - 2.95" / 75.0 mm 40.0 cal guns - 11.02lbs / 5.00kg shells, 150 per gun
  18. Quick firing guns in deck mounts, 1898 Model
  19. 4 x Single mounts on side ends, evenly spread
  20. Weight of broadside 4,453 lbs / 2,020 kg
  21.  
  22. Armour:
  23. - Belts: Width (max) Length (avg) Height (avg)
  24. Main: 13.8" / 350 mm 426.51 ft / 130.00 m 10.66 ft / 3.25 m
  25. Upper: 3.94" / 100 mm 426.51 ft / 130.00 m 8.01 ft / 2.44 m
  26. Main Belt covers 154 % of normal length
  27.  
  28. - Torpedo Bulkhead - Strengthened structural bulkheads:
  29. 1.57" / 40 mm 426.51 ft / 130.00 m 24.90 ft / 7.59 m
  30. Beam between torpedo bulkheads 78.74 ft / 24.00 m
  31.  
  32. - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
  33. Main: 13.8" / 350 mm 7.87" / 200 mm 11.8" / 300 mm
  34. 2nd: 5.91" / 150 mm 3.94" / 100 mm 3.94" / 100 mm
  35. 3rd: 1.18" / 30 mm 0.79" / 20 mm -
  36.  
  37. - Armoured deck - multiple decks:
  38. For and Aft decks: 2.95" / 75 mm
  39. Forecastle: 1.97" / 50 mm Quarter deck: 1.97" / 50 mm
  40.  
  41. Machinery:
  42. Coal fired boilers, complex reciprocating steam engines,
  43. Direct drive, 2 shafts, 21,419 ihp / 15,978 Kw = 20.00 kts
  44. Range 4,200nm at 12.00 kts
  45. Bunker at max displacement = 2,119 tons (100% coal)
  46.  
  47. Complement:
  48. 684 - 890
  49.  
  50. Cost:
  51. £1.394 million / $5.575 million
  52.  
  53. Distribution of weights at normal displacement:
  54. Armament: 1,049 tons, 6.9 %
  55. - Guns: 1,049 tons, 6.9 %
  56. Armour: 5,624 tons, 37.0 %
  57. - Belts: 2,816 tons, 18.5 %
  58. - Torpedo bulkhead: 619 tons, 4.1 %
  59. - Armament: 929 tons, 6.1 %
  60. - Armour Deck: 1,260 tons, 8.3 %
  61. Machinery: 3,455 tons, 22.7 %
  62. Hull, fittings & equipment: 3,231 tons, 21.2 %
  63. Fuel, ammunition & stores: 1,853 tons, 12.2 %
  64. Miscellaneous weights: 0 tons, 0.0 %
  65.  
  66. Overall survivability and seakeeping ability:
  67. Survivability (Non-critical penetrating hits needed to sink ship):
  68. 14,561 lbs / 6,605 Kg = 17.7 x 11.8 " / 300 mm shells or 2.4 torpedoes
  69. Stability (Unstable if below 1.00): 1.46
  70. Metacentric height 6.7 ft / 2.1 m
  71. Roll period: 12.7 seconds
  72. Steadiness - As gun platform (Average = 50 %): 58 %
  73. - Recoil effect (Restricted arc if above 1.00): 0.22
  74. Seaboat quality (Average = 1.00): 1.16
  75.  
  76. Hull form characteristics:
  77. Hull has a flush deck,
  78. a normal bow and a cruiser stern
  79. Block coefficient (normal/deep): 0.604 / 0.610
  80. Length to Beam Ratio: 5.42 : 1
  81. 'Natural speed' for length: 20.65 kts
  82. Power going to wave formation at top speed: 52 %
  83. Trim (Max stability = 0, Max steadiness = 100): 50
  84. Bow angle (Positive = bow angles forward): 0.00 degrees
  85. Stern overhang: 0.00 ft / 0.00 m
  86. Freeboard (% = length of deck as a percentage of waterline length):
  87. Fore end, Aft end
  88. - Forecastle: 19.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
  89. - Forward deck: 31.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
  90. - Aft deck: 31.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
  91. - Quarter deck: 19.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
  92. - Average freeboard: 13.12 ft / 4.00 m
  93. Ship tends to be wet forward
  94.  
  95. Ship space, strength and comments:
  96. Space - Hull below water (magazines/engines, low = better): 100.8 %
  97. - Above water (accommodation/working, high = better): 90.1 %
  98. Waterplane Area: 24,654 Square feet or 2,290 Square metres
  99. Displacement factor (Displacement / loading): 91 %
  100. Structure weight / hull surface area: 130 lbs/sq ft or 636 Kg/sq metre
  101. Hull strength (Relative):
  102. - Cross-sectional: 0.94
  103. - Longitudinal: 1.71
  104. - Overall: 1.00
  105. Adequate machinery, storage, compartmentation space
  106. Adequate accommodation and workspace room
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