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Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
Chapter 5 - Section 1 |
NAVY PROJECTILES |
12-cm (120-mm) (4.7-Inch) High-Explosive (Ordinary Mk 3 Mod 1) |
Weight of filled projectile (without fuze): 44.75 pounds. |
Weight of projectile, empty: 41.14 pounds. |
Weight stamped on rotating band (sample): 18.520 kg. (varies with individual projecti-les). |
Length of projectile (without fuze or adapter): 14.1 inches. |
Diameter at bourrelet: 4.7 inches (119.5 mm). |
Distance from base to rotating band: 0.78 inch. |
Width of rotating band: 1.95 inches. |
Radius of ogive: 4 cal. |
Filling: Cast picric acid (shimose) 3.61 pounds. |
The charge consists of two blocks of explosive cast and sealed in a waxed paper contai-ner, encased in a heavy cotton-flannel bag and sealed in the projectile with paraffin. |
Fuzing: |
a. Width adapter: Type 5-year point detonating fuze. |
b. Without adapter: Type 88 point detonating fuze. |
This projectile cannot be fuzed with standard mechanical time fuze for A.A. use because it will not accomomodate the auxiliary gaine used with these fuzes. |
Weapons in which used: |
British type 12-cm/40 gun (low angle). |
Type 3-year 12-cm/45 gun (low angle). |
Type 11-year 12-cm/45 gun (low angle). |
Figure 386 – 12-cm High-Explosive (Ordinary Mk 3 Mod 1). |
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