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| U.S. EXPLOSIVE ORDNANCE |
| PART 1 - PROJECTILES, PROPELLANT, AND PROECTILE FUZES |
| Chapter 1 - Projectiles |
| Section 4 - 5-INCH PROJECTILES |
| 5-inch Illuminating Mk 25 |
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(a) Mods 1, 3, 4, 5, 6 |
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(b) Mod 2 (Obsolete) |
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Guns used in |
(a) 5"/51 (bag or case) (b) 5"/25 (case) |
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Over-all length, inches |
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With nose fuze |
19.975 |
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Without nose fuze |
15.865 |
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Diameter of base, inches |
4.948 |
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Distance base to band, inches |
2.43 |
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Width of band, inches |
2.0 |
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Diameter at bourrelet, inches |
4.985 |
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Filling |
Expelling charge is black powder; flare, magnesium |
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Weight of filling |
Expelling charge is 2.5 ounces |
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Weight of loaded projectile, pounds |
54.5 |
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Cartidge Case |
(a) Mk 3 (b) Mk 4, Mk 4 Mod 3 |
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Primer |
Mk 13 and all Mods |
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Fuzes |
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Nose |
Mk 18 Mods 2, 3, and 4 |
| Mk 50 and all Mods | |
| Mk 63 Mod 0 |
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The Mod 2 projectile, used in the 5"/25 gun, is identical to the Mod 1, except for mo-dification of the rotating band- |
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When these projectiles are used in the 5"/51 bag gun, the Primer Mk 15 Mod 1 is used, and the Nose Fuzes Mk 50 and Mk 63 may be employed. |
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Use of the Nose Fuzes Mk 50 and Mk 63 is not authorized with rounds used in the 5"/25 and 5"/51 case guns. |
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The Illuminating Contents Mk 3 are used with projectiles Mods 1 through 4; projectiles Mods 5 and 6 are assembled with Illuminating Contents Mk 4 Mod 5 when used in the 5"/51 bag gun, Illuminating Contents Mk 3 when used in the 5"/51 case gun. |
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