mk2 


     Caliber = 21.0 cm (8.3 inch) 
     Shell weight = 135 kg (298 lbs) 
     Muzzle velocity = 853 m/s (2797 fps) 

     Relative ballistic performance: 0.90 

     Muzzle energy = 49.100 megajoules = 18093.3 foot-tons 

     Relative muzzle energy: 1.00 

     Barrel length: 50 calibers 


     Elevation          Range         Time      Velocity   Fall Angle 

       2.5 deg        5300 meters     7.2 sec    634 m/s     3.0 deg 
       5.0 deg        9000 meters    13.8 sec    517 m/s     7.0 deg 
       7.5 deg       11800 meters    19.8 sec    448 m/s    11.5 deg 
      10.0 deg       14100 meters    25.4 sec    404 m/s    16.2 deg 
      12.5 deg       16100 meters    30.8 sec    375 m/s    21.2 deg 
      15.0 deg       17800 meters    35.9 sec    357 m/s    26.1 deg 
      20.0 deg       20600 meters    45.5 sec    340 m/s    35.0 deg 
      25.0 deg       22900 meters    54.6 sec    338 m/s    42.8 deg 
      30.0 deg       24600 meters    63.2 sec    344 m/s    49.2 deg 
      35.0 deg       26000 meters    71.4 sec    355 m/s    54.5 deg 
      40.0 deg       26800 meters    79.2 sec    367 m/s    58.9 deg 
      45.0 deg       27200 meters    86.6 sec    379 m/s    62.6 deg 
      50.0 deg       27000 meters    93.5 sec    391 m/s    65.9 deg 


          Armor Penetration - Vertical Belt Armor 

               (Relative armor quality, 1.00) 

               Maximum penetration: 42.82 cm 


     Elevation          Range            Belt       Deck 

       1.1 deg        2600 meters        35 cm
       2.2 deg        4700 meters        30 cm
       3.7 deg        7100 meters        25 cm
       5.4 deg        9500 meters         ...        2 cm 
       5.9 deg       10100 meters        20 cm
      10.0 deg       14100 meters        15 cm
      12.9 deg       16400 meters         ...        4 cm 
      18.9 deg       20100 meters        10 cm
      20.1 deg       20600 meters         ...        6 cm 
      27.0 deg       23600 meters         ...        8 cm 
      34.7 deg       25900 meters         ...       10 cm 
      43.3 deg       27100 meters         ...       12 cm 
      46.5 deg       27200 meters         5 cm


     Maximum range = 27200 meters at 45.6 deg elevation