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| Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
| Chapter 5 - Section 1 |
| NAVY PROJECTILES |
| 20-mm High-Explosive Incendiary Projectile |
| Fuzing: |
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Basic projectile: Model 1. |
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Modification I: Model 1. |
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Modification II: Model 3. |
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Modification III: Model 2. |
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Modification IV: Model 3. |
| Weight of projectile (fuzed): 4.51 ounces. |
| Length of projectile (fuzed): 3.23 inches. |
| Length of complete round: Mk I, 5.66 inches; Mk II, 6.84 inches. |
| Filling: |
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TNT: 0.18 ounces. |
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WP: 0.11 ounces. |
| Incendiary mixture: 0.04 ounces. |
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Color and markings: Greenish-yellow over all, with one or more white bands to indicate modifications. |
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Remarks: The body of all projectiles (basic and modifications) is of steel, with one cavi-ty. The base of the cavity contains TNT, above which is an aluminum cannister white phosphorus. The cannister is surrounded by a graphited, flake nitrocellulose incendiary mixture. The Model 4 projectile eliminates the TNT and has a longer white phosphorus cannister. |
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Difference between the basic projectiles and subsequent modification are principally in the fuzes and slight changes in the shape of the cavity. |
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Figure 351 – 20-mm High-Explosive Incendiary Projectile. |
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