This was a twin mount developed from the upper turret used on the Tu-95 "Bear" bombers. The naval mount was accepted into service in 1964 and was used on light ships.

These guns were gas-operated and belt-fed. The barrel was monobloc with a blade type breech. Fire control used a Ksenon-125 radar.

Gun Characteristics

Designation 23 mm (0.91") AN-23
Ship Class Used On Pr. 125 experimental torpedo boats and Pr. 125A border guard patrol ships
Date Of Design N/A
Date In Service 1964
Gun Weight N/A
Gun Length oa N/A
Barrel Length N/A
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire 1,200 rounds per minute


Type Fixed
Weight of Complete Round HE-FRAG incendiary tracer: 0.73 lbs. (0.331 kg)
HE-FRAG incendiary: 0.745 lbs. (0.338 kg)
Projectile Types and Weights HE-FRAG incendiary tracer: 0.388 lbs. (0.176 kg)
HE-FRAG incendiary: 0.406 lbs. (0.184 kg)
Bursting Charge N/A
Projectile Length N/A
Propellant Charge N/A
Muzzle Velocity HE-FRAG incendiary tracer: 2,330 fps (710 mps)
HE-FRAG incendiary: 2,260 fps (690 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun 1,000 rounds


Range with 0.73 lbs. (0.331 kg) shells
Elevation Distance
Max. Effective Range 2,187 yards (2,000 m)

Mount/Turret Data

Designation Twin Mount AN-23
Weight N/A
Elevation -4 / +90 degrees
Elevation Rate 45 degrees per second
Train 360 degrees
Train Rate 45 degrees per second
Gun recoil N/A


Data from:

  • "Entsiklopedia Otechestvennoi Artillerii" (Encyclopedia of Fatherland (Russian) Artillery) by A.V. Shirokorad

Special help from Vladimir Yakubov