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Dauntless, Cascadian Dreadnought laid down 1920

Units: 6

  • CRS Dauntless
  • CRS Relentless
  • CRS Fearless
  • CRS Superb
  • CRS Challenger
  • CRS Thunderer


Displacement:
    45,585 t light; 48,414 t standard; 51,970 t normal; 54,815 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (819.76 ft / 800.00 ft) x 106.00 ft x (33.00 / 34.53 ft)
    (249.86 m / 243.84 m) x 32.31 m  x (10.06 / 10.53 m)

Armament:
      12 - 16.00" / 406 mm 50.0 cal guns - 2,240.01lbs / 1,016.05kg shells, 100 per gun
      Breech loading guns in turret on barbette mounts, 1920 Model
      4 x 3-gun mounts on centreline ends, evenly spread
        2 raised mounts - superfiring
      8 - 5.00" / 127 mm 50.0 cal guns - 66.16lbs / 30.01kg shells, 350 per gun
      Quick firing guns in turret on barbette mounts, 1919 Model
      4 x Twin mounts on sides, evenly spread
      6 - 4.00" / 102 mm 43.0 cal guns - 31.26lbs / 14.18kg shells, 1,000 per gun
      Dual purpose guns in deck mounts, 1920 Model
      3 x 2 row twin mounts on side ends, majority forward
        3 raised mounts
      40 - 1.57" / 40.0 mm 40.0 cal guns - 2.01lbs / 0.91kg shells, 2,000 per gun
      Anti-air guns in deck mounts, 1920 Model
      5 x 2 row quad mounts on sides, forward evenly spread
        2 raised mounts
      5 x 2 row quad mounts on sides, aft evenly spread
        2 raised mounts
      Weight of broadside 27,677 lbs / 12,554 kg

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    15.0" / 381 mm    450.00 ft / 137.16 m    16.00 ft / 4.88 m
    Ends:    Unarmoured
      Main Belt covers 87 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
        4.00" / 102 mm    450.00 ft / 137.16 m    30.00 ft / 9.14 m
    Beam between torpedo bulkheads 77.50 ft / 23.62 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    18.0" / 457 mm    7.00" / 178 mm        13.5" / 343 mm
    2nd:    5.00" / 127 mm    2.00" / 51 mm        4.50" / 114 mm
    3rd:    0.50" / 13 mm          -                  -
    4th:    0.20" / 5 mm          -                  -

   - Armoured deck - single deck:
    For and Aft decks: 8.00" / 203 mm
    Forecastle: 1.00" / 25 mm  Quarter deck: 1.00" / 25 mm

   - Conning towers: Forward 16.00" / 406 mm, Aft 3.00" / 76 mm

Machinery:
    Oil fired boilers, steam turbines,
    Electric cruising motors plus geared drives, 4 shafts, 66,001 shp / 49,237 Kw = 23.20 kts
    Range 9,000nm at 15.00 kts
    Bunker at max displacement = 6,402 tons

Complement:
    1,720 - 2,237

Cost:
    £11.066 million / $44.264 million

Distribution of weights at normal displacement:
    Armament: 5,903 tons, 11.4 %
       - Guns: 5,903 tons, 11.4 %
    Armour: 19,809 tons, 38.1 %
       - Belts: 4,772 tons, 9.2 %
       - Torpedo bulkhead: 1,998 tons, 3.8 %
       - Armament: 4,368 tons, 8.4 %
       - Armour Deck: 8,101 tons, 15.6 %
       - Conning Towers: 570 tons, 1.1 %
    Machinery: 2,308 tons, 4.4 %
    Hull, fittings & equipment: 17,509 tons, 33.7 %
    Fuel, ammunition & stores: 6,386 tons, 12.3 %
    Miscellaneous weights: 56 tons, 0.1 %
       - Hull above water: 6 tons
       - On freeboard deck: 50 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      71,269 lbs / 32,327 Kg = 34.8 x 16.0 " / 406 mm shells or 12.5 torpedoes
    Stability (Unstable if below 1.00): 1.05
    Metacentric height 6.0 ft / 1.8 m
    Roll period: 18.1 seconds
    Steadiness    - As gun platform (Average = 50 %): 60 %
            - Recoil effect (Restricted arc if above 1.00): 0.94
    Seaboat quality  (Average = 1.00): 1.19

Hull form characteristics:
    Hull has a flush deck,
      a normal bow and a round stern
    Block coefficient (normal/deep): 0.650 / 0.655
    Length to Beam Ratio: 7.55 : 1
    'Natural speed' for length: 28.28 kts
    Power going to wave formation at top speed: 40 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 10.00 degrees
    Stern overhang: 15.00 ft / 4.57 m
    Freeboard (% = length of deck as a percentage of waterline length):
                Fore end,     Aft end
       - Forecastle:    20.00 %,  27.00 ft / 8.23 m,  23.50 ft / 7.16 m
       - Forward deck:    30.00 %,  23.50 ft / 7.16 m,  18.00 ft / 5.49 m
       - Aft deck:    35.00 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
       - Quarter deck:    15.00 %,  18.00 ft / 5.49 m,  18.00 ft / 5.49 m
       - Average freeboard:        20.21 ft / 6.16 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 86.3 %
        - Above water (accommodation/working, high = better): 138.6 %
    Waterplane Area: 64,962 Square feet or 6,035 Square metres
    Displacement factor (Displacement / loading): 102 %
    Structure weight / hull surface area: 228 lbs/sq ft or 1,115 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.99
        - Longitudinal: 1.06
        - Overall: 1.00
    Adequate machinery, storage, compartmentation space    Excellent accommodation and workspace room

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