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Liberte' Class Predreadnought Battleships
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The lead ship of this class, Liberte', was sunk by a magazine explosion on 25 September, 1911.

Liberte' Class Predreadnought Battleships, laid down 1902

     Length, 133.8 m x Beam, 24.3 m x Depth, 8.3 m
          15781 tonnes normal displacement (15032 tonnes standard)

     Main battery:       4 x 30.5-cm (2 x 2)
     Secondary battery: 10 x 19.0-cm (5 x 2)
     QF battery:        18 x 16.0-cm
     Light battery:     13 x  6.5-cm

          Weight of broadside: 3597 kg

     2 TT, 45.0 cm (submerged)

     Main belt, 29.0 cm; bow and stern, 8.0 cm
     Upper belt, 6.0 cm
     Torpedo bulkhead, 2.0 cm
     Armor deck, average 8.0 cm
     Conning tower, 30.5 cm

     Battery armor:
          Main, 35.5 cm / secondary, 15.0 cm
          QF, 8.0 cm / light guns, 5.0 cm shields 

     Maximum speed for 13093 indicated kw = 19.00 knots
          Approximate cruising radius, 4200 nm / 10 knots

     Typical complement: 704-915


                    Estimated cost, $6.781 million (1.695 million)

          Remarks:

     Caution: Hull structure is subject to strain in open-sea
     conditions.

     Main belt does not fully protect magazines and
     engineering spaces.

     Magazines and engineering spaces are cramped, with poor
     watertight subdivision.

     Cramped ship; poor crew accommodation, limited working space.


          Distribution of weights:
                                                       Percent
                                                       normal
                                                    displacement:

          Armament .........................    989 tonnes =   6 pct
          Armor, total .....................   5667 tonnes =  36 pct

               Belt                            1974 tonnes =  13 pct
               Torpedo bulkhead                 226 tonnes =   1 pct
               Deck                            1415 tonnes =   9 pct
               C.T.                             163 tonnes =   1 pct
               Armament                        1889 tonnes =  12 pct

          Machinery ........................   2658 tonnes =  17 pct
          Hull and fittings; equipment .....   4743 tonnes =  30 pct
          Fuel, ammunition, stores .........   1723 tonnes =  11 pct
          Miscellaneous weights ............      0 tonnes =   0 pct
                                              -----
                                              15781 tonnes = 100 pct

          Estimated metacentric height, 1.3 m

     Displacement summary:

          Light ship:             14057 tonnes
          Standard displacement:  15032 tonnes
          Normal service:         15781 tonnes
          Full load:              16316 tonnes

          Loading submergence 2276 tonnes/metre

     +++++++++++++++++++++++++


     Estimated overall survivability and seakeeping ability:

          Relative margin of stability: 1.09

          Shellfire needed to sink: 2686 kg = 6.8 x 30.5-cm shells
               (Approximates weight of penetrating
               shell hits needed to sink ship,
               not counting critical hits)

          Torpedoes needed to sink: 1.3
               (Approximates number of 'typical'
               torpedo hits needed to sink ship)

          Relative steadiness as gun platform, 54 percent
               (50 percent is 'average')

          Relative rocking effect from firing to beam, 0.49

          Relative quality as a seaboat: 1.08

     +++++++++++++++++++++++++


     Hull form characteristics:

          Block coefficient: 0.58
          Sharpness coefficient: 0.43
          Hull speed coefficient 'M' = 5.35
          'Natural speed' for length = 20.9 knots
          Power going to wave formation
               at top speed: 48 percent


     Estimated hull characteristics and strength:

          Relative underwater volume absorbed by
               magazines and engineering spaces: 140 percent

          Relative accommodation and working space: 86 percent


          Displacement factor: 83 percent
               (Displacement relative to loading factors)


          Relative cross-sectional hull strength: 0.85
               (Structure weight per square
               metre of hull surface: 681 kg)

          Relative longitudinal hull strength: 1.40
               (for 4.00 m average freeboard;
               freeboard adjustment -1.06 m)

          Relative composite hull strength: 0.89

     +++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

438.86 x 79.70 x 27.22; 13.12 -- Dimensions
0.58 -- Block coefficient
1902 -- Year laid down
19.00 / 4200 / 10.00; Reciprocating -- Speed / radius / cruise
 0 tons -- Miscellaneous weights
++++++++++
4 x 12.01; 2; 0 -- Main battery; turrets; superfiring
   :
10 x 7.48; 5 -- Secondary battery; turrets
   :
18 x 6.30 -- Tertiary (QF/AA) battery
   :
13 x 2.56 -- Fourth (light) battery
2 / 2 / 17.72 -- TT / submerged / size
++++++++++
11.42 / 3.15 / 2.36 / 0.79; 100 -- Belt armor; relative extent
3.15 / 12.01 -- Deck / CT
13.98 / 5.91 / 3.15 / 1.97 -- Battery armor


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


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


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