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  1. Chatham-class, Republiek der Verenigde Provinciën Slagkruiser laid down 1914 (Engine 1916)
  2.  
  3. Displacement:
  4. 30.604 t light; 32.130 t standard; 34.002 t normal; 35.499 t full load
  5.  
  6. Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
  7. (731,00 ft / 731,00 ft) x 99,00 ft x (28,50 / 29,51 ft)
  8. (222,81 m / 222,81 m) x 30,18 m x (8,69 / 9,00 m)
  9.  
  10. Armament:
  11. 8 - 14,30" / 363 mm 44,0 cal guns - 1.576,31lbs / 715,00kg shells, 100 per gun
  12. Breech loading guns in turret on barbette mounts, 1909 Model
  13. 4 x Twin mounts on centreline ends, evenly spread
  14. 2 raised mounts - superfiring
  15. 20 - 5,32" / 135 mm 48,0 cal guns - 79,37lbs / 36,00kg shells, 160 per gun
  16. Quick firing guns in casemate mounts, 1915 Model
  17. 14 x Single mounts on sides, forward deck aft
  18. 6 raised mounts
  19. 6 x Single mounts on sides, aft deck forward
  20. 6 - 2,80" / 71,1 mm 42,0 cal guns - 9,92lbs / 4,50kg shells, 150 per gun
  21. Anti-air guns in deck mounts, 1913 Model
  22. 6 x Single mounts on side ends, majority aft
  23. Weight of broadside 14.257 lbs / 6.467 kg
  24. Main Torpedoes
  25. 6 - 20,5" / 521 mm, 23,00 ft / 7,01 m torpedoes - 1,392 t each, 8,354 t total
  26. submerged side tubes
  27. 2nd Torpedoes
  28. 1 - 20,5" / 521 mm, 23,00 ft / 7,01 m torpedo - 1,392 t total
  29. submerged bow tube
  30.  
  31. Armour:
  32. - Belts: Width (max) Length (avg) Height (avg)
  33. Main: 11,0" / 279 mm 430,00 ft / 131,06 m 16,00 ft / 4,88 m
  34. Ends: 4,50" / 114 mm 290,00 ft / 88,39 m 12,00 ft / 3,66 m
  35. 11,00 ft / 3,35 m Unarmoured ends
  36. Upper: 7,50" / 191 mm 410,00 ft / 124,97 m 6,00 ft / 1,83 m
  37. Main Belt covers 90 % of normal length
  38.  
  39. - Torpedo Bulkhead - Additional damage containing bulkheads:
  40. 2,00" / 51 mm 480,00 ft / 146,30 m 18,00 ft / 5,49 m
  41. Beam between torpedo bulkheads 74,00 ft / 22,56 m
  42.  
  43. - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
  44. Main: 12,0" / 305 mm 9,00" / 229 mm 11,0" / 279 mm
  45. 2nd: 7,50" / 191 mm - -
  46. 3rd: 0,75" / 19 mm - -
  47.  
  48. - Armoured deck - multiple decks:
  49. For and Aft decks: 5,25" / 133 mm
  50. Forecastle: 1,50" / 38 mm Quarter deck: 1,50" / 38 mm
  51.  
  52. - Conning towers: Forward 12,00" / 305 mm, Aft 8,00" / 203 mm
  53.  
  54. Machinery:
  55. Oil fired boilers, steam turbines,
  56. Geared drive, 4 shafts, 92.005 shp / 68.636 Kw = 27,07 kts
  57. Range 8.500nm at 12,00 kts
  58. Bunker at max displacement = 3.369 tons
  59.  
  60. Complement:
  61. 1.251 - 1.627
  62.  
  63. Cost:
  64. £3,419 million / $13,676 million
  65.  
  66. Distribution of weights at normal displacement:
  67. Armament: 2.225 tons, 6,5 %
  68. - Guns: 2.205 tons, 6,5 %
  69. - Weapons: 19 tons, 0,1 %
  70. Armour: 12.451 tons, 36,6 %
  71. - Belts: 4.684 tons, 13,8 %
  72. - Torpedo bulkhead: 639 tons, 1,9 %
  73. - Armament: 2.547 tons, 7,5 %
  74. - Armour Deck: 4.129 tons, 12,1 %
  75. - Conning Towers: 452 tons, 1,3 %
  76. Machinery: 3.428 tons, 10,1 %
  77. Hull, fittings & equipment: 12.310 tons, 36,2 %
  78. Fuel, ammunition & stores: 3.398 tons, 10,0 %
  79. Miscellaneous weights: 190 tons, 0,6 %
  80. - Hull below water: 65 tons
  81. - On freeboard deck: 100 tons
  82. - Above deck: 25 tons
  83.  
  84. Overall survivability and seakeeping ability:
  85. Survivability (Non-critical penetrating hits needed to sink ship):
  86. 50.168 lbs / 22.756 Kg = 34,3 x 14,3 " / 363 mm shells or 7,5 torpedoes
  87. Stability (Unstable if below 1.00): 1,07
  88. Metacentric height 5,6 ft / 1,7 m
  89. Roll period: 17,6 seconds
  90. Steadiness - As gun platform (Average = 50 %): 70 %
  91. - Recoil effect (Restricted arc if above 1.00): 0,69
  92. Seaboat quality (Average = 1.00): 1,11
  93.  
  94. Hull form characteristics:
  95. Hull has rise forward of midbreak,
  96. a normal bow and a cruiser stern
  97. Block coefficient (normal/deep): 0,577 / 0,582
  98. Length to Beam Ratio: 7,38 : 1
  99. 'Natural speed' for length: 27,04 kts
  100. Power going to wave formation at top speed: 48 %
  101. Trim (Max stability = 0, Max steadiness = 100): 63
  102. Bow angle (Positive = bow angles forward): -0,50 degrees
  103. Stern overhang: -5,00 ft / -1,52 m
  104. Freeboard (% = length of deck as a percentage of waterline length):
  105. Fore end, Aft end
  106. - Forecastle: 23,00 %, 24,50 ft / 7,47 m, 22,50 ft / 6,86 m
  107. - Forward deck: 36,00 %, 22,50 ft / 6,86 m, 22,00 ft / 6,71 m
  108. - Aft deck: 20,00 %, 15,00 ft / 4,57 m, 14,50 ft / 4,42 m
  109. - Quarter deck: 21,00 %, 14,50 ft / 4,42 m, 15,00 ft / 4,57 m
  110. - Average freeboard: 19,42 ft / 5,92 m
  111. Ship tends to be wet forward
  112.  
  113. Ship space, strength and comments:
  114. Space - Hull below water (magazines/engines, low = better): 86,6 %
  115. - Above water (accommodation/working, high = better): 154,4 %
  116. Waterplane Area: 51.802 Square feet or 4.813 Square metres
  117. Displacement factor (Displacement / loading): 112 %
  118. Structure weight / hull surface area: 187 lbs/sq ft or 915 Kg/sq metre
  119. Hull strength (Relative):
  120. - Cross-sectional: 0,99
  121. - Longitudinal: 1,08
  122. - Overall: 1,00
  123. Adequate machinery, storage, compartmentation space
  124. Excellent accommodation and workspace room
  125. Ship has slow, easy roll, a good, steady gun platform
  126.  
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