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Russian 210mm/56
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This gun is the main armament of the Sviatoslav Class Heavy Cruisers

Russian 210mm/56
 
Caliber = 21.0 cm (8.3 inch)
Shell weight = 135 kg (298 lbs)
Muzzle velocity = 920 m/s (3017 fps)
Relative ballistic performance: 0.90
Muzzle energy = 57.107 megajoules = 21043.9 foot-tons
Relative muzzle energy: 1.16
Barrel length: 56 calibers
 
Elevation Range Time Velocity Fall Angle
2.5 deg 6000 meters 7.7 sec 658 m/s 3.1 deg
5.0 deg 10000 meters 14.6 sec 529 m/s 7.2 deg
7.5 deg 13000 meters 21.0 sec 454 m/s 12.0 deg
10.0 deg 15500 meters 26.9 sec 408 m/s 17.0 deg
12.5 deg 17600 meters 32.4 sec 379 m/s 22.0 deg
15.0 deg 19300 meters 37.7 sec 361 m/s 26.9 deg
20.0 deg 22300 meters 47.8 sec 345 m/s 36.2 deg
25.0 deg 24800 meters 57.2 sec 345 m/s 43.8 deg
30.0 deg 26700 meters 66.2 sec 352 m/s 50.1 deg
35.0 deg 28200 meters 74.8 sec 364 m/s 55.2 deg
40.0 deg 29300 meters 83.1 sec 377 m/s 59.5 deg
45.0 deg 29700 meters 90.9 sec 390 m/s 63.1 deg
50.0 deg 29600 meters 98.2 sec 403 m/s 66.2 deg
 Armor Penetration - Vertical Belt Armor
(Relative armor quality, 1.00)
Maximum penetration: 47.35 cm

Elevation Range Belt Deck
1.5 deg 3900 meters 35 cm
2.5 deg 6000 meters 30 cm
4.0 deg 8500 meters 25 cm
5.0 deg 10000 meters ... 2 cm
6.2 deg 11500 meters 20 cm
10.1 deg 15600 meters 15 cm
11.9 deg 17100 meters ... 4 cm
18.9 deg 21800 meters 10 cm
19.0 deg 21800 meters ... 6 cm
25.6 deg 25000 meters ... 8 cm
32.8 deg 27600 meters ... 10 cm
40.9 deg 29400 meters ... 12 cm
47.4 deg 29700 meters 5 cm
 
 Maximum range = 29700 meters at 46.3 deg elevation


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