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Australia, Cascadian Dreadnought laid down 1914

Units: 2

  • CRS Australia (ex-REN Fakhr-ad-Din Yussuf)
  • CRS Alaska (ex-REN Faris ad-Din Aktai)



Displacement:
    27,747 t light; 29,809 t standard; 32,179 t normal; 34,075 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (630.70 ft / 617.00 ft) x 94.00 ft x (30.00 / 31.50 ft)
    (192.24 m / 188.06 m) x 28.65 m  x (9.14 / 9.60 m)

Armament:
      9 - 14.00" / 356 mm 52.0 cal guns - 1,620.00lbs / 734.82kg shells, 100 per gun
      Breech loading guns in turret on barbette mounts, 1915 Model
      3 x 3-gun mounts on centreline ends, majority forward
        1 raised mount - superfiring
      20 - 6.00" / 152 mm 50.0 cal guns - 114.33lbs / 51.86kg shells, 400 per gun
      Quick firing guns in casemate mounts, 1914 Model
      20 x Single mounts on sides, evenly spread
        12 hull mounts in casemates- Limited use in heavy seas
      12 - 3.00" / 76.2 mm 50.0 cal guns - 14.29lbs / 6.48kg shells, 1,050 per gun
      Anti-air guns in deck mounts, 1914 Model
      8 x Single mounts on side ends, evenly spread
        8 raised mounts
      4 x Single mounts on sides, evenly spread
        4 double raised mounts
      Weight of broadside 17,038 lbs / 7,728 kg
      Main Torpedoes
      4 - 21.0" / 533 mm, 23.00 ft / 7.01 m torpedoes - 1.456 t each, 5.825 t total
    submerged side tubes

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    14.0" / 356 mm    360.00 ft / 109.73 m    13.00 ft / 3.96 m
    Ends:    Unarmoured
      Main Belt covers 90 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
        3.00" / 76 mm    360.00 ft / 109.73 m    28.00 ft / 8.53 m
    Beam between torpedo bulkheads 71.00 ft / 21.64 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    14.0" / 356 mm    12.0" / 305 mm        12.0" / 305 mm
    2nd:    6.00" / 152 mm    6.00" / 152 mm        6.00" / 152 mm

   - Protected deck - single deck:
    For and Aft decks: 6.50" / 165 mm
    Forecastle: 2.00" / 51 mm  Quarter deck: 2.00" / 51 mm

   - Conning towers: Forward 15.00" / 381 mm, Aft 5.00" / 127 mm

Machinery:
    Oil fired boilers, steam turbines,
    Direct drive, 4 shafts, 56,000 shp / 41,776 Kw = 23.49 kts
    Range 9,000nm at 13.00 kts
    Bunker at max displacement = 4,266 tons

Complement:
    1,200 - 1,561

Cost:
    £3.594 million / $14.375 million

Distribution of weights at normal displacement:
    Armament: 3,650 tons, 11.3 %
       - Guns: 3,638 tons, 11.3 %
       - Weapons: 12 tons, 0.0 %
    Armour: 12,198 tons, 37.9 %
       - Belts: 2,934 tons, 9.1 %
       - Torpedo bulkhead: 1,119 tons, 3.5 %
       - Armament: 2,922 tons, 9.1 %
       - Armour Deck: 4,787 tons, 14.9 %
       - Conning Towers: 436 tons, 1.4 %
    Machinery: 2,157 tons, 6.7 %
    Hull, fittings & equipment: 9,736 tons, 30.3 %
    Fuel, ammunition & stores: 4,432 tons, 13.8 %
    Miscellaneous weights: 6 tons, 0.0 %
       - Hull below water: 6 tons

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      42,470 lbs / 19,264 Kg = 31.0 x 14.0 " / 356 mm shells or 6.5 torpedoes
    Stability (Unstable if below 1.00): 1.10
    Metacentric height 5.4 ft / 1.7 m
    Roll period: 16.9 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0.80
    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): 0.647 / 0.653
    Length to Beam Ratio: 6.56 : 1
    'Natural speed' for length: 24.84 kts
    Power going to wave formation at top speed: 49 %
    Trim (Max stability = 0, Max steadiness = 100): 59
    Bow angle (Positive = bow angles forward): 10.00 degrees
    Stern overhang: 10.00 ft / 3.05 m
    Freeboard (% = length of deck as a percentage of waterline length):
                Fore end,     Aft end
       - Forecastle:    15.00 %,  21.00 ft / 6.40 m,  18.00 ft / 5.49 m
       - Forward deck:    35.00 %,  18.00 ft / 5.49 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:        18.18 ft / 5.54 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 89.5 %
        - Above water (accommodation/working, high = better): 126.6 %
    Waterplane Area: 44,320 Square feet or 4,117 Square metres
    Displacement factor (Displacement / loading): 103 %
    Structure weight / hull surface area: 190 lbs/sq ft or 929 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.96
        - Longitudinal: 1.44
        - Overall: 1.00
    Adequate machinery, storage, compartmentation space
    Excellent accommodation and workspace room
    Ship has slow, easy roll, a good, steady gun platform


BackgroundEdit

     The Australia-class is the result of an aborted purchase of vessels for the Egyptian Navy.  The Sultan, impressed with the performance of the 14" guns on the CRS Cascadia during the World Cruise Squadron's circumnavigation of the globe, had insisted upon ordering such vessels for his Navy.  Moran Brothers of Seattle adopted the 1909-laid ship's design for the Egyptians, modifying it to better match the newest advancements in warships and thus making it over 30,000 tons.  However, a year after the ships were laid the Sultan decided he wanted newer ships using a larger 15" gun designed by the British, the famous 15"/42, and demanded the order be canceled.  Through delicate negotiation the Egyptians sold the unfinished vessels to the Cascadian Navy and the two ships were modified to fit RCN desires.  The Australia and Alaska were thus brought into service, utilizing an all-or-nothing armor scheme and other advancements over the older Cascadia and Pacifica.

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