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Sovereign, Cascadian Dreadnought laid down 1923

Units: 6

  • CRS Sovereign
  • CRS Senator
  • CRS Centurion
  • CRS Consul
  • CRS Magistrate
  • CRS Praetor



Design SpecificationsEdit


Displacement:
    47,440 t light; 50,428 t standard; 53,965 t normal; 56,794 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (839.94 ft / 820.00 ft) x 107.00 ft x (33.20 / 34.68 ft)
    (256.01 m / 249.94 m) x 32.61 m  x (10.12 / 10.57 m)

Armament:
      12 - 16.00" / 406 mm 50.0 cal guns - 2,400.00lbs / 1,088.62kg shells, 100 per gun
      Breech loading guns in turret on barbette mounts, 1923 Model
      4 x 3-gun mounts on centreline ends, evenly spread
        2 raised mounts - superfiring
      18 - 5.00" / 127 mm 43.0 cal guns - 61.05lbs / 27.69kg shells, 350 per gun
      Dual purpose guns in deck mounts, 1923 Model
      8 x Twin mounts on sides, evenly spread
      1 x Twin mount on centreline, forward deck aft
      40 - 1.57" / 40.0 mm 40.0 cal guns - 1.87lbs / 0.85kg shells, 2,000 per gun
      Anti-air guns in deck mounts, 1923 Model
      5 x 4 row quad mounts on sides, forward evenly spread
        2 raised mounts
      5 x 4 row quad mounts on sides, aft evenly spread
        2 raised mounts
      20 - 1.00" / 25.4 mm 50.0 cal guns - 0.53lbs / 0.24kg shells, 2,000 per gun
      Anti-air guns in deck mounts, 1923 Model
      10 x 2 row twin mounts on sides, evenly spread
        2 raised mounts
      Weight of broadside 29,984 lbs / 13,601 kg

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    16.0" / 406 mm    445.00 ft / 135.64 m    16.00 ft / 4.88 m
    Ends:    Unarmoured
      Main Belt covers 83 % of normal length
      Main Belt inclined 15.00 degrees (positive = in)

   - Torpedo Bulkhead - Additional damage containing bulkheads:
        4.00" / 102 mm    445.00 ft / 135.64 m    30.00 ft / 9.14 m
    Beam between torpedo bulkheads 79.00 ft / 24.08 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    18.0" / 457 mm    10.0" / 254 mm        14.0" / 356 mm
    2nd:    2.00" / 51 mm          -                  -
    3rd:    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, 70,000 shp / 52,220 Kw = 23.46 kts
    Range 9,000nm at 15.00 kts
    Bunker at max displacement = 6,366 tons

Complement:
    1,769 - 2,301

Cost:
    £13.782 million / $55.128 million

Distribution of weights at normal displacement:
    Armament: 5,897 tons, 10.9 %
       - Guns: 5,897 tons, 10.9 %
    Armour: 20,667 tons, 38.3 %
       - Belts: 5,058 tons, 9.4 %
       - Torpedo bulkhead: 1,976 tons, 3.7 %
       - Armament: 4,678 tons, 8.7 %
       - Armour Deck: 8,370 tons, 15.5 %
       - Conning Towers: 585 tons, 1.1 %
    Machinery: 2,340 tons, 4.3 %
    Hull, fittings & equipment: 18,472 tons, 34.2 %
    Fuel, ammunition & stores: 6,525 tons, 12.1 %
    Miscellaneous weights: 65 tons, 0.1 %
       - Hull above water: 15 tons
       - On freeboard deck: 50 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      75,836 lbs / 34,399 Kg = 37.0 x 16.0 " / 406 mm shells or 13.5 torpedoes
    Stability (Unstable if below 1.00): 1.05
    Metacentric height 6.1 ft / 1.9 m
    Roll period: 18.2 seconds
    Steadiness    - As gun platform (Average = 50 %): 58 %
            - Recoil effect (Restricted arc if above 1.00): 0.96
    Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
    Hull has a flush deck,
      a normal bow and a round stern
    Block coefficient (normal/deep): 0.648 / 0.653
    Length to Beam Ratio: 7.66 : 1
    'Natural speed' for length: 28.64 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 %,  28.00 ft / 8.53 m,  23.00 ft / 7.01 m
       - Forward deck:    30.00 %,  23.00 ft / 7.01 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,  17.00 ft / 5.18 m
       - Average freeboard:        20.08 ft / 6.12 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 82.7 %
        - Above water (accommodation/working, high = better): 138.4 %
    Waterplane Area: 67,116 Square feet or 6,235 Square metres
    Displacement factor (Displacement / loading): 105 %
    Structure weight / hull surface area: 233 lbs/sq ft or 1,135 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.99
        - Longitudinal: 1.04
        - Overall: 1.00
    Excellent machinery, storage, compartmentation space
    Excellent accommodation and workspace room
2 Scout Aircraft Included



Building Information Edit

CRS Sovereign
Builder: Reilly & Colette Inc., Bremerton
Laid: 2 February 1923


CRS Senator
Builder: Reilly & Colette Inc., Bremerton
Laid: 2 February 1923


CRS Centurion
Builder: Moran Brothers Ltd., Seattle
Laid: 8 March 1923


CRS Consul
Builder: Mare Island Naval Shipyard, Vallejo
Laid: 8 March 1923


CRS Magistrate
Builder: Mare Island Naval Shipyard, Vallejo
Laid: 8 March 1923


CRS Praetor
Builder: Moran Brothers Ltd., Seattle
Laid: 18 May 1923

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