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Anti-Aircraft Artillery Rating

This program calculates a simple estimation of the effectiveness of the antiaircraft battery of a given warship. The calculation is made by taking into account the most fundamental aspects of an antiaircraft artillery mounting. The program allows up to eight batteries to be calculated, thus allowing complex layouts where a same model of weapon could be installed in mountings of different characteristics. Values for Battery #1 are required, the rest are optional.

Elevation and train rates, this is, the speed at which an artillery mounting can elevate or rotate its cannons, are key factors for estimating the effectiveness of the antiaircraft batteries. When the aircraft are approaching the ship firepower is the essential factor, but once the aircraft are flying around their target firepower would be of not much use if the mountings are too slow to track the movements of the attackers.

Below there is a list showing the values for some capital ships of the World War Two era. The higher the number, the higher the effectiveness of the artillery installed in a warship to counter aerial attacks. In this regard Axis warships were at disadvantage for motorized mountings were not so widespread in them as in Allied warships. Note that finding precise data about the artillery pieces involved was very difficult if not impossible, so sometimes the rates had to be estimated. The program is made in such a way that firepower and effectiveness will have the same value when the sum on elevation and train rates averages 15 (degrees per second).

PHP application by Sakhalia Net Project

Battery:#1#2#3#4#5#6#7#8
Number of cannons:
Caliber (millimeters):
Muzzle speed (meters per second):
Rate of fire (rounds per minute):
Elevation rate (degrees per second):
Train rate (degrees per second):



Battleship Iowa (1943)
71.5/119.3
Battleship Tennessee (1943)
52.2/88.3
Battleship Richelieu (1943)
50.5/83.5
Battleship Nelson (1945)
50/82.6
Battleship King George V (1940)
31.2/46.7
Battleship Yamato (1945)
45.3/41.4
Heavy cruiser Indianapolis (1945)
22.1/38.4
Aircraft carrier Ark Royal (1939)
20.8/32.6
Aircraft carrier Hornet (1942)
16/27.6
Battlecruiser Kongo (1944)
28.8/27
Battlecruiser Hood (1941)
17.5/26.6
Cruiser Sverdlov (1952)
24.4/24.6
Battleship Tirpitz (1944)
17.6/20.3
Aircraft carrier Taiho (1944)
17.2/17.1
Heavy cruiser Chokai (1944)
14.5/14
Battleship Richelieu (1940)
9.5/12.6
Aircraft carrier Aquila (1945)
22.2/9.3
Battleship Bismarck (1941)
11.8/8.7
Heavy cruiser Prinz Eugen (1940)
8.7/6.3
Heavy cruiser Zara (1940)
5.5/5.1
Battleship Vittorio Veneto (1940)
11.1/3.1