This was a Škoda gun used as secondary weapons on the last Austria-Hungary pre-dreadnoughts, the Radetzky class. Unusual in that there was apparently no date used in the official designation.
This weapon has been criticized on the basis that the shell splashes were nearly the same as those from the 30.5 cm (12") main guns thus making it hard to spot correctly. However, they did perform good work during the shore bombardment missions during World War I.
Actual bore diameter of all guns was 23.8 cm (9.37").
|Designation||24 cm (9.4") L/45|
|Ship Class Used On||Radetzky class|
|Date Of Design||1907|
|Date In Service||1909|
|Gun Weight||26.5 tons (26.9 mt) w/o breech
Breech 1,766 lbs. (801 kg)
|Gun Length oa||425.2 in (10.800 m)|
|Rifling Length||323.1 in (8.207 m)|
|Grooves||(72) 0.094 in D x 0.272 in W (2.375 mm D x 6.9 mm W)|
|Lands||0.138 in (3.5 mm)|
|Twist||RH increasing 0 to 1 in 25|
|Rate Of Fire||2.5 rounds per minute|
|Projectile Types and Weights||APC L/3.5: 474.0 lbs. (215 kg)
CPC L/4.1: 468.9 lbs. (215 kg)
|Bursting Charge||APC L/3.5: 5.3 lbs. (2.4 kg)
CPC L/4.1: 38.4 lbs. (17.4 kg)
|Projectile Length||APC L/3.5: about 33.0 in (84 cm)
CPC L/4.1: about 38.7 in (98.4 cm)
|Propellant Charge||154.3 lbs. (70.0 kg)|
|Cartridge Case Weights||228.4 lbs. (103.6 kg)|
|Muzzle Velocity||2,625 fps (800 mps)|
|Approximate Barrel Life||N/A|
|Ammunition stowage per gun||100 rounds|
|3.91 degrees||6,560 yards (6000 m)|
|8.83 degrees||10,940 yards (10,000 m)|
|12.18 degrees||13,120 yards (12,000 m)|
Range table went only to 12.18 degrees. It should be understood that the maximum range of these guns could not be used at the time of their construction.
|Designation||Two-gun Turret: Radetzky (4)|
|Weight||235 tons (239 mt)|
|Elevation||-4 / +20 degrees|
|Train||+130 / -130 degrees|
|Loading Angle||+2.5 degrees|
Turrets were electrically powered.
"Naval Weapons of World War One" by Norman Friedman
"Austro-Hungarian Battleships 1914-18" by Ryan Noppen
Special help from Mihály Krámli
12 October 2013 - New datapage
19 March 2019 - Converted to HTML 5 format, added photograph of Radetzky turret