Description

This was used both as an anti-torpedo boat gun (TAG) and as an anti-aircraft gun (BAK). It fired no faster than the longer 7 cm guns, but its lighter weight made it better suited for use on small torpedo boats. Trained via a shoulder piece.

Actual bore diameter was 6.6 cm (2.6").

Gun Characteristics

Designation 7 cm (2.75") G. L/30 K09 Škoda
Ship Class Used On Destroyers: Huszár class as rearmed
Torpedo Boats: 250 ton class (T, F and M groups) as rearmed
Date Of Design about 1908
Date In Service 1910
Gun Weight 538 lbs. (244 kg) without breech
Gun Length oa 78.0 in (1.980 m)
Bore Length N/A
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire 15 to 20 rounds per minute

Ammunition

Type Fixed
Projectile Types and Weights HE: 8.8 lbs. (4.0 kg)
Bursting Charge N/A
Projectile Length N/A
Propellant Charge 1.1 lbs. (0.48 kg)
Muzzle Velocity 1,805 fps (550 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun N/A

Range

N/A

Mount/Turret Data

Designation Single Mounts
   Huszár (5)
   250 Tonne Torpedo Boats (T, F and M groups): (2)
Weight TAG (anti-torpedo boats): 1,000 lbs. (454 kg)
BAK (anti-aircraft): 2,100 lbs. (954 kg)
Elevation TAG: About -5 / +20 degrees
BAK: About -5 / +85 degrees
Elevation Rate Manually operated, only
Train N/A
Train Rate Manually operated, only
Gun recoil N/A
Loading Angle Any

Sources

"Naval Weapons of World War One" by Norman Friedman
Original research by Mihály Krámli and András Hatala

Page History

14 May 2025 - New datapage
19 September 2025 - Added photograph of Torpedo Boat 81T