FANDOM


Olympia, Cascadian Dreadnought laid down 1908

Units: 4

  • CRS Olympia
  • CRS Oregon
  • CRS Columbia
  • CRS Victoria

Displacement:
    21,030 t light; 22,159 t standard; 23,832 t normal; 25,170 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (543.09 ft / 530.00 ft) x 86.00 ft x (30.00 / 31.39 ft)
    (165.53 m / 161.54 m) x 26.21 m  x (9.14 / 9.57 m)

Armament:
      10 - 12.00" / 305 mm 45.0 cal guns - 871.38lbs / 395.25kg shells, 100 per gun
      Breech loading guns in turret on barbette mounts, 1905 Model
      4 x 2-gun mounts on centreline ends, evenly spread
        2 raised mounts - superfiring
      1 x 2-gun mount on centreline, aft deck forward
      20 - 5.00" / 127 mm 50.0 cal guns - 66.16lbs / 30.01kg shells, 200 per gun
      Breech loading guns in casemate mounts, 1902 Model
      20 x Single mounts on sides, evenly spread
        20 hull mounts in casemates- Limited use in heavy seas
      12 - 3.00" / 76.2 mm 50.0 cal guns - 13.01lbs / 5.90kg shells, 250 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 10,193 lbs / 4,624 kg
      Main Torpedoes
      4 - 21.0" / 533 mm, 16.40 ft / 5.00 m torpedoes - 1.042 t each, 4.169 t total
    submerged side tubes

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    12.5" / 318 mm    354.00 ft / 107.90 m    13.00 ft / 3.96 m
    Ends:    8.00" / 203 mm    176.00 ft / 53.64 m    13.00 ft / 3.96 m
    Upper:    6.00" / 152 mm    354.00 ft / 107.90 m    13.00 ft / 3.96 m
      Main Belt covers 103 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
        3.00" / 76 mm    354.00 ft / 107.90 m    26.00 ft / 7.92 m
    Beam between torpedo bulkheads 60.00 ft / 18.29 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    12.0" / 305 mm    10.0" / 254 mm        11.0" / 279 mm
    2nd:    9.00" / 229 mm    8.00" / 203 mm        8.00" / 203 mm

   - Protected deck - single deck:
    For and Aft decks: 3.00" / 76 mm
    Forecastle: 3.00" / 76 mm  Quarter deck: 3.00" / 76 mm

   - Conning towers: Forward 10.50" / 267 mm, Aft 4.00" / 102 mm

Machinery:
    Coal and oil fired boilers, steam turbines,
    Direct drive, 4 shafts, 35,000 shp / 26,110 Kw = 21.61 kts
    Range 8,300nm at 10.00 kts
    Bunker at max displacement = 3,011 tons (70% coal)

Complement:
    958 - 1,246

Cost:
    £1.893 million / $7.573 million

Distribution of weights at normal displacement:
    Armament: 2,173 tons, 9.1 %
       - Guns: 2,165 tons, 9.1 %
       - Weapons: 8 tons, 0.0 %
    Armour: 10,396 tons, 43.6 %
       - Belts: 4,394 tons, 18.4 %
       - Torpedo bulkhead: 1,022 tons, 4.3 %
       - Armament: 2,838 tons, 11.9 %
       - Armour Deck: 1,883 tons, 7.9 %
       - Conning Towers: 259 tons, 1.1 %
    Machinery: 1,888 tons, 7.9 %
    Hull, fittings & equipment: 6,573 tons, 27.6 %
    Fuel, ammunition & stores: 2,802 tons, 11.8 %
    Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      34,095 lbs / 15,465 Kg = 39.5 x 12.0 " / 305 mm shells or 8.3 torpedoes
    Stability (Unstable if below 1.00): 1.05
    Metacentric height 4.4 ft / 1.3 m
    Roll period: 17.2 seconds
    Steadiness    - As gun platform (Average = 50 %): 70 %
            - Recoil effect (Restricted arc if above 1.00): 0.69
    Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
    Hull has a flush deck,
      a normal bow and a cruiser stern
    Block coefficient (normal/deep): 0.610 / 0.616
    Length to Beam Ratio: 6.16 : 1
    'Natural speed' for length: 23.02 kts
    Power going to wave formation at top speed: 49 %
    Trim (Max stability = 0, Max steadiness = 100): 58
    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:    20.00 %,  17.50 ft / 5.33 m,  17.50 ft / 5.33 m
       - Forward deck:    30.00 %,  17.50 ft / 5.33 m,  17.50 ft / 5.33 m
       - Aft deck:    35.00 %,  17.50 ft / 5.33 m,  17.50 ft / 5.33 m
       - Quarter deck:    15.00 %,  17.50 ft / 5.33 m,  17.50 ft / 5.33 m
       - Average freeboard:        17.50 ft / 5.33 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 87.4 %
        - Above water (accommodation/working, high = better): 117.1 %
    Waterplane Area: 33,649 Square feet or 3,126 Square metres
    Displacement factor (Displacement / loading): 105 %
    Structure weight / hull surface area: 161 lbs/sq ft or 784 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.95
        - Longitudinal: 1.59
        - Overall: 1.00
    Adequate machinery, storage, compartmentation space
    Adequate accommodation and workspace room
    Ship has slow, easy roll, a good, steady gun platform
    Good seaboat, rides out heavy weather easily

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