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Courbet Class Battleships
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The Courbet Class were the first French Dreadnought Battleships. 

courbet-13.jpg

Courbet Class Battleship, laid down 1910
     Length, 165.0 m x Beam, 28.3 m x Depth, 8.7 m
          23756 tonnes normal displacement (22221 tonnes standard)
     Main battery:      12 x 30.5-cm (6 x 2; 2 superfiring)
     Secondary battery: 22 x 14.0-cm
     QF battery:         6 x  4.5-cm
     Light battery:      6 x  1.3-cm
          Weight of broadside: 5567 kg
     4 TT, 45.0 cm (submerged)
     Main belt, 26.2 cm; bow and stern, 18.0 cm
     Torpedo bulkhead, 6.0 cm
     Armor deck, average 5.8 cm
     Conning tower, 30.0 cm
     Battery armor:
          Main, 32.0 cm / secondary, 10.0 cm
          QF, 2.5 cm shields 
     Maximum speed for 30280 shaft kw = 22.50 knots
          Approximate cruising radius, 7500 nm / 10 knots
     Typical complement: 957-1244

                    Estimated cost, $9.078 million (£2.270 million)
          Remarks:
     Relative extent of belt armor, 96 percent of 'typical' coverage.
     Main belt does not fully protect magazines and
     engineering spaces.
     Main deck secondary guns subject to being washed down
     in a seaway.

          Distribution of weights:
                                                       Percent
                                                       normal
                                                    displacement:
          Armament .........................   1531 tonnes =   6 pct
          Armor, total .....................   8447 tonnes =  36 pct
               Belt                            2317 tonnes =  10 pct
               Torpedo bulkhead                 877 tonnes =   4 pct
               Deck                            1473 tonnes =   6 pct
               C.T.                             211 tonnes =   1 pct
               Armament                        3569 tonnes =  15 pct
          Machinery ........................   1844 tonnes =   8 pct
          Hull and fittings; equipment .....   8902 tonnes =  37 pct
          Fuel, ammunition, stores .........   3031 tonnes =  13 pct
          Miscellaneous weights ............      0 tonnes =   0 pct
                                              -----
                                              23756 tonnes = 100 pct
          Estimated metacentric height, 1.5 m
     Displacement summary:
          Light ship:             20725 tonnes
          Standard displacement:  22221 tonnes
          Normal service:         23756 tonnes
          Full load:              24889 tonnes
          Loading submergence 3268 tonnes/metre
     +++++++++++++++++++++++++

     Estimated overall survivability and seakeeping ability:
          Relative margin of stability: 1.04
          Shellfire needed to sink: 9424 kg = 23.9 x 30.5-cm shells
               (Approximates weight of penetrating
               shell hits needed to sink ship,
               not counting critical hits)
          Torpedoes needed to sink: 3.4
               (Approximates number of 'typical'
               torpedo hits needed to sink ship)
          Relative steadiness as gun platform, 50 percent
               (50 percent is 'average')
          Relative rocking effect from firing to beam, 0.53
          Relative quality as a seaboat: 1.00
     +++++++++++++++++++++++++

     Hull form characteristics:
          Block coefficient: 0.58
          Sharpness coefficient: 0.43
          Hull speed coefficient 'M' = 5.76
          'Natural speed' for length = 23.3 knots
          Power going to wave formation
               at top speed: 50 percent

     Estimated hull characteristics and strength:
          Relative underwater volume absorbed by
               magazines and engineering spaces: 99 percent
          Relative accommodation and working space: 114 percent

          Displacement factor: 98 percent
               (Displacement relative to loading factors)

          Relative cross-sectional hull strength: 0.99
               (Structure weight per square
               metre of hull surface: 905 kg)
          Relative longitudinal hull strength: 1.41
               (for 5.00 m average freeboard;
               freeboard adjustment -0.49 m)
          Relative composite hull strength: 1.03
     +++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]
541.20 x 92.82 x 28.54; 16.40 -- Dimensions
0.58 -- Block coefficient
1910 -- Year laid down
22.50 / 7500 / 10.00; Turbine, coal fired -- Speed / radius / cruise
 0 tons -- Miscellaneous weights
++++++++++
12 x 12.01; 6; 2 -- Main battery; turrets; superfiring
   :
22 x 5.51; 0 -- Secondary battery; turrets
  Main deck battery
   :
6 x 1.77 -- Tertiary (QF/AA) battery
  Gun-shields
   :
6 x 0.51 -- Fourth (light) battery
4 / 4 / 17.72 -- TT / submerged / size
++++++++++
10.31 / 7.09 / 0.00 / 2.36; 96 -- Belt armor; relative extent
2.28 / 11.81 -- Deck / CT
12.60 / 3.94 / 0.98 / 0.00 -- Battery armor

     (Note: For portability, values are stored in Anglo-American units)

     +++++++++++++++++++++++++++++++++++++++++++++++++++++++


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