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French 13.4"
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This 340mm gun is the main armament of the Provence Class Battleships.

           French 340mm/45

     Caliber = 34.0 cm (13.4 inch)
     Shell weight = 575 kg (1267 lbs)
     Muzzle velocity = 794 m/s (2603 fps)
     Relative ballistic performance: 1.00
     Muzzle energy = 181.1 megajoules = 66727.2 foot-tons
     Relative muzzle energy: 0.87
     Barrel length: 45 calibers

     Elevation          Range         Time      Velocity   Fall Angle
       2.5 deg        5000 meters     6.9 sec    678 m/s     2.8 deg
       5.0 deg        9200 meters    13.4 sec    599 m/s     6.0 deg
       7.5 deg       12600 meters    19.7 sec    542 m/s     9.7 deg
      10.0 deg       15600 meters    25.6 sec    502 m/s    13.5 deg
      12.5 deg       18300 meters    31.3 sec    473 m/s    17.5 deg
      15.0 deg       20600 meters    36.9 sec    453 m/s    21.6 deg
      20.0 deg       24600 meters    47.4 sec    431 m/s    29.3 deg
      25.0 deg       27900 meters    57.4 sec    425 m/s    36.3 deg
      30.0 deg       30600 meters    67.0 sec    429 m/s    42.6 deg
      35.0 deg       32600 meters    76.0 sec    439 m/s    47.8 deg
      40.0 deg       34000 meters    84.7 sec    451 m/s    52.5 deg
      45.0 deg       34600 meters    92.8 sec    465 m/s    56.7 deg
      50.0 deg       34400 meters   100.4 sec    478 m/s    60.5 deg

          Armor Penetration - Vertical Belt Armor
               (Relative armor quality, 0.90)
               Maximum penetration: 72.65 cm

     Elevation          Range            Belt       Deck
       1.2 deg        2600 meters        65 cm
       2.3 deg        4600 meters        60 cm
       3.0 deg        6000 meters         ...        2 cm
       3.4 deg        6600 meters        55 cm
       4.8 deg        8900 meters        50 cm
       5.6 deg       10000 meters         ...        4 cm
       6.6 deg       11500 meters        45 cm
       8.3 deg       13700 meters         ...        6 cm
       8.9 deg       14400 meters        40 cm
      11.6 deg       17400 meters         ...        8 cm
      11.9 deg       17700 meters        35 cm
      16.2 deg       21700 meters        30 cm
      16.3 deg       21700 meters         ...       10 cm
      19.5 deg       24200 meters         ...       12 cm
      22.4 deg       26300 meters         ...       14 cm
      22.8 deg       26500 meters        25 cm
      25.4 deg       28200 meters         ...       16 cm
      28.5 deg       29900 meters         ...       18 cm
      31.7 deg       31300 meters         ...       20 cm
      33.2 deg       32000 meters        20 cm
      34.9 deg       32600 meters         ...       22 cm
      38.1 deg       33500 meters         ...       24 cm
      41.6 deg       34300 meters         ...       26 cm
      45.0 deg       34600 meters         ...       28 cm
      48.2 deg       34600 meters        15 cm
      48.8 deg       34500 meters         ...       30 cm

     Maximum range = 34600 meters at 46.3 deg elevation


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