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E94-Class Torpedoboat [1894] (Seondok)

Oct 13th, 2020
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  1. E94-Class, Seondok County Torpedoboat laid down 1894
  2.  
  3. Displacement:
  4. 386 t light; 400 t standard; 413 t normal; 424 t full load
  5.  
  6. Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
  7. (198.49 ft / 196.85 ft) x 19.69 ft x (6.56 / 6.70 ft)
  8. (60.50 m / 60.00 m) x 6.00 m x (2.00 / 2.04 m)
  9.  
  10. Armament:
  11. 8 - 1.77" / 45.0 mm 20.0 cal guns - 2.49lbs / 1.13kg shells, 500 per gun
  12. Quick firing guns in deck mounts, 1894 Model
  13. 2 x Quad mounts on centreline, evenly spread
  14. 2 raised mounts
  15. Weight of broadside 20 lbs / 9 kg
  16. Main Torpedoes
  17. 4 - 19.7" / 500 mm, 9.84 ft / 3.00 m torpedoes - 0.353 t each, 1.410 t total
  18. In 4 sets of deck mounted centre rotating tubes
  19. 2nd Torpedoes
  20. 2 - 19.7" / 500 mm, 9.84 ft / 3.00 m torpedoes - 0.353 t each, 0.705 t total
  21. In 2 sets of deck mounted side rotating tubes
  22.  
  23. Armour:
  24. - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
  25. Main: 0.49" / 13 mm - -
  26.  
  27. Machinery:
  28. Coal fired boilers, complex reciprocating steam engines,
  29. Direct drive, 2 shafts, 3,350 ihp / 2,499 Kw = 20.75 kts
  30. Range 500nm at 10.00 kts
  31. Bunker at max displacement = 24 tons (100% coal)
  32.  
  33. Complement:
  34. 45 - 59
  35.  
  36. Cost:
  37. £0.047 million / $0.186 million
  38.  
  39. Distribution of weights at normal displacement:
  40. Armament: 6 tons, 1.4 %
  41. - Guns: 2 tons, 0.4 %
  42. - Weapons: 4 tons, 1.0 %
  43. Armour: 2 tons, 0.6 %
  44. - Armament: 2 tons, 0.6 %
  45. Machinery: 232 tons, 56.3 %
  46. Hull, fittings & equipment: 145 tons, 35.2 %
  47. Fuel, ammunition & stores: 27 tons, 6.5 %
  48. Miscellaneous weights: 0 tons, 0.0 %
  49.  
  50. Overall survivability and seakeeping ability:
  51. Survivability (Non-critical penetrating hits needed to sink ship):
  52. 172 lbs / 78 Kg = 61.9 x 1.8 " / 45 mm shells or 0.6 torpedoes
  53. Stability (Unstable if below 1.00): 1.39
  54. Metacentric height 0.8 ft / 0.2 m
  55. Roll period: 9.4 seconds
  56. Steadiness - As gun platform (Average = 50 %): 44 %
  57. - Recoil effect (Restricted arc if above 1.00): 0.11
  58. Seaboat quality (Average = 1.00): 0.79
  59.  
  60. Hull form characteristics:
  61. Hull has a flush deck,
  62. a ram bow and a cruiser stern
  63. Block coefficient (normal/deep): 0.569 / 0.571
  64. Length to Beam Ratio: 10.00 : 1
  65. 'Natural speed' for length: 14.03 kts
  66. Power going to wave formation at top speed: 62 %
  67. Trim (Max stability = 0, Max steadiness = 100): 50
  68. Bow angle (Positive = bow angles forward): 0.00 degrees
  69. Stern overhang: 0.00 ft / 0.00 m
  70. Freeboard (% = length of deck as a percentage of waterline length):
  71. Fore end, Aft end
  72. - Forecastle: 20.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
  73. - Forward deck: 30.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
  74. - Aft deck: 35.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
  75. - Quarter deck: 15.00 %, 7.38 ft / 2.25 m, 7.38 ft / 2.25 m
  76. - Average freeboard: 7.38 ft / 2.25 m
  77. Ship tends to be wet forward
  78.  
  79. Ship space, strength and comments:
  80. Space - Hull below water (magazines/engines, low = better): 184.1 %
  81. - Above water (accommodation/working, high = better): 58.7 %
  82. Waterplane Area: 2,752 Square feet or 256 Square metres
  83. Displacement factor (Displacement / loading): 36 %
  84. Structure weight / hull surface area: 31 lbs/sq ft or 154 Kg/sq metre
  85. Hull strength (Relative):
  86. - Cross-sectional: 0.95
  87. - Longitudinal: 1.57
  88. - Overall: 1.00
  89. Cramped machinery, storage, compartmentation space
  90. Cramped accommodation and workspace room
  91. Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
  92.  
  93. ========================================
  94. Based on the Forban-Class torpedoboat. Actual speed is 26.00 knots (inputted hp is 3,250).
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