A widely used weapon employed in both the anti-torpedo boat and anti-aircraft roles in easily removable mounts. Some of these guns were mounted on top of main gun turrets where they could be coupled with the 30.5 cm guns for gunnery practice. The K16 (also known as BAG) was slightly different to suit an anti-aircraft mounting but had the same ballistic characteristics as the K10.

Seven of these guns were allocated for coast defense and eight more were given to the Army.

Actual bore diameter was 6.6 cm (2.6").

Gun Characteristics

Designation 7 cm (2.75")/50 K10 and K16 Skoda
Ship Class Used On Viribus Unitis, Erzherzog Karl and Sankt Georg Classes
Date Of Design 1910 / 1916
Date In Service 1912 / 1917
Gun Weight 1,146 lbs. (520 kg) without breech
Gun Length oa about 138 in (3.500 m)
Bore Length N/A
Rifling Length N/A
Grooves (20) 0.030 in D x 0.244 W (0.75 mm D x 6.2 mm W)
Lands N/A
Twist RH 1 in 30
Chamber Volume N/A
Rate Of Fire 15 to 20 rounds per minute


Type Fixed
Projectile Types and Weights HE: 9.9 lbs. (4.5 kg)
Bursting Charge 3.5 lbs. (1.6 kg)
Propellant Charge 3.5 lbs. (1.6 kg)
Muzzle Velocity 2,887 fps (880 mps)
Working Pressure 18.4 tons/in2 (2,900 kg/cm2)
Approximate Barrel Life N/A
Ammunition stowage per gun N/A


Range with 9.9 lbs. (4.5 kg) AP Shell
Elevation Distance
20 degrees 8,750 yards (8,000 m)
AA Ceiling 16,400 feet (5,000 m)

Mount/Turret Data

  • Single Mounts (Anti-torpedo boat, casemate and anti-airship types):
    • Viribus Unitis (12) anti-torpedo boat and (4) anti-airship
    • Radetzky (4)
    • Monarch (1)
Weight N/A
Elevation Anti-torpedo boat: -10 / +20 degrees
Casemate: -6 / +15 degrees
Anti-airship: -5 / +90 degrees
Elevation Rate N/A
Train 360
Train Rate N/A
Gun recoil N/A
Loading Angle N/A


Data from:

  • "Naval Weapons of World War One" by Norman Friedman
  • "Austro-Hungarian Battleships 1914-18" by Ryan Noppen
  • "The Viribus Unitis Class" article in "Warship Volume II" by Friedrich Prasky
  • Tony DiGiulian's personal data files

Page History

01 August 2006
12 October 2013
Added additional information and picture of AA gunners