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| U.S. EXPLOSIVE ORDNANCE |
| PART 6 - BOMBS AND BOMB FUZES |
| Chapter 17 - EXPLOSIVE BOMBS |
| Section 4 - NAVY "MK" SERIES |
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100-pound G.P. Mk 1 Mods 2 and 3, Mk 4 Mods 1-4 (Obsolescent) |
| Mk 1 | Mk 4 | |
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Over-all length, inches |
48.8 | 36.2 |
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Body length, inches |
--- | 28.0 |
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Body diameter, inches |
7.9 | 8.0 |
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Wall thickness, inch |
--- | 0.175 |
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Tail length, inches |
21.0 | 9.1 |
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Tail width, inches |
9.8 | 11.0 |
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Filling |
TNT | TNT |
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Weight of filling |
65# | 55# |
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Total weight |
160# |
120#, Mod 1 105#, Mod 4 |
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Charge/weight ratio |
56% |
45.8%, Mod 1 52.8%, Mod 4 |
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Fuzing: Nose Fuze AN-Mk 219, Nose Fuze Mk 233. |
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Body construction: Mk 1 has two sheet steel castings welded together, the bomb having a "tear drop" shape. Mk 4 is a single-piece steel forging; cylindrical, with ogival nose. |
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Suspension: Mk 1 is horizontally suspendend by two lugs welded on the body; it may have single lug or trunnions on the band. Mk 4 has two lugs welded on the body 14 in-ches apart; with a single lug welded on the opposite side. |
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Color and markings: Grey over all with a four-inch yellow disc between the two lugs, indicating H.E. The color may be yellow over all. |
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Tail construction: Mk 1 has four vanes which pass down over the body and are wel-ded to a tail cone. The vanes are fastened to the body of the bomb by screws and are braced by two sets of bar struts riveted to the vanes. Mk 4 has four vanes welded to a sleeve which is secured to the bomb body with a locking nut. Box-type internal struts are welded to the vanes. |
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Figure 266. 100-pound G.P. Bomb Mk 4 Mod 4 |
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