This gun replaced the earlier Degtyarev DHSK 38 12.7 mm gun on a one-for-one basis starting in 1945. The bullet for these guns was originally developed in the 1930s for anti-tank rifles. During World War II, it was found to be inadequate in its intended role. Rather than retooling the factories, the bullet was instead carried over to the KPV heavy machine gun.
Weapon is air-cooled.
This weapon is produced in the PRC under the designation Type 69 for the naval version.
Ammunition for these weapons is currently (2007) being produced by Bulgaria, Egypt, People's Republic of China, Poland, Romania and Russia.
|Designation||Russia / USSR: 14.5 mm/93 (0.57") 2M-7
PRC: 14.5 mm/93 (0.57") Type 69
|Ship Class Used On||Russia / USSR: Patrol Boats
People's Republic of China: Patrol Boats
|Date Of Design||1944|
|Date In Service||1945|
|Gun Length oa||N/A|
|Barrel Length||about 53 in (135 cm)|
|Rate Of Fire||Cyclic: 600 rounds per minute
Practical/: 150 rounds per minute
|Weight of Complete Round||N/A|
|Projectile Types and Weights||
|Complete Round Length||AP-I: 6.1 in (15.58 cm)|
|Cartridge Case Type, Size and Empty Weight||Steel or brass, 14.5 x 114 mm|
|Muzzle Velocity||AP-I-57: 3,202 fps (976 mps)
API Type 56: 3,215 - 3,264 fps (980 - 995 mps)
HE-I: 3,281 - 3,330 fps (1,000 - 1,015 mps)
|Approximate Barrel Life||N/A|
|Ammunition stowage per gun||N/A 1|
- ^Ammunition is usually supplied in 150 round belts.
|Surface||2,400 yards (2,200 m)|
|Air||2,200 yards (2,000 m)|
|Weight||1,320 lbs. (600 kg) without ammunition|
|Elevation||-10 / +85 degrees|
|Elevation Rate||Manual operation, only|
|Train Rate||Manual operation, only|
Most Russian twin mounts are over / under while PRC mountings are side by side.
- "The Naval Institute Guide to World Naval Weapon Systems 1991/92" by Norman Friedman
- "Jane's Ammunition Handbook: Ninth Edition 2000-2001" edited by Terry J. Gander and Charles Q. Cutshaw
- "Jane's Fighting Ships 1998-99" edited by Capt. Richard Sharpe, RN