An improved version of the 100 mm/56 (3.9") Type 79 and has replaced that weapon on new construction. Uses a French-designed autoloader.
The mounting reportedly lacks safety interlocks and is considered dangerous to its crew.
| Designation | 100 mm/56 (3.9") ENG-2 or Type 79A |
|---|---|
| Ship Class Used On | Jianghu II and III classes |
| Date Of Design | N/A |
| Date In Service | 1940 |
| Gun Weight | 2.424 tons (2.463 mt) |
| Gun Length oa | 228.15 in (5.795 m) |
| Bore Length | 210.63 in (5.350 m) |
| Rifling Length | 182.09 in (4.625 m) |
| Grooves | 40 |
| Lands | N/A |
| Twist | N/A |
| Chamber Volume | 487 in3 (7.98 dm3) |
| Rate Of Fire | 25 rounds per minute |
| Type | Fixed |
|---|---|
| Weight of Complete Round | about 61.7 lbs. (28 kg) |
| Projectile Types and Weights | AA grenade: 34.39 lbs. (15.6 kg) AA (ZS-56): 34.39 lbs. (15.6 kg) AA (ZS-56P): 35.05 lbs. (15.9 kg) HE mod 1928 (F-56): 34.83 lbs. (15.8 kg) Diving: 33.07 lbs. (15.0 kg) Star Shell (SB-56): 35.27 lbs. (16.0 kg) ECM (anti radar) (PB-56) |
| Bursting Charge | AA grenade: 2.67 lbs. (1.21 kg) AA (ZS-56): 2.71 lbs. (1.23 kg) AA (ZS-56P): 1.74 lbs. (0.79 kg) HE mod 1928 (F-56): 2.76 lbs. (1.25 kg) Diving: 6.28 lbs. (2.85 kg) Star Shell (SB-56): 0.03 lbs. (0.015 kg) ECM (anti radar) (PB-56): reflective material DOS-15 |
| Projectile Length | AA grenade: 5.3 calibers AA (ZS-56): 5.13 calibers AA (ZS-56P): 5.0 calibers HE mod 1928: 5.2 calibers Diving: 5.04 calibers Star Shell (SB-56): 5.2 calibers |
| Propellant Charge | 13.2 lbs. (6 kg) |
| Muzzle Velocity | 3,004 fps (915 mps) |
| Working Pressure | 19.1 tons/in2 (3,000 kg/cm2) |
| Approximate Barrel Life | 800 |
| Ammunition stowage per gun | N/A 1 |
- ^Twin mounts have 26 ready service rounds per gun.
| Elevation | Distance |
|---|---|
| Maximum Range | 24,600 yards (22,500 m) |
| Elevation | Distance |
|---|---|
| AA Ceiling | 49,000 feet (15,000 m) |
| Designation | Twin Mount Type 79A |
|---|---|
| Weight | 34 tons (35 mt) |
| Elevation | -5 / +85 degrees |
| Rate of Elevation | 25 degrees per second (23 degrees per second2 acceleration) |
| Train | +/ - 225 degrees (450 degrees total) |
| Rate of Train | 20 degrees per second (20 degrees per second2 acceleration) |
| Gun Recoil | N/A |
Data from:
- "The Naval Institute Guide to World Naval Weapon Systems 1997/98" by Norman Friedman