Fuzes: A-3 (a), A-3 (b), B-2 (a).

Over-all length: 68 inches.

Length of body: 39 3/4 inches.

Diameter of body: 11 1/2 inches.

Thickness of wall: 3/4 inch.

Material of wall: Steel.

Type of suspension: Horizontal.

Suspension lug: Normal Navy suspension lug.

Color and markings: Gray over all with a green nose band and green tail struts. There are two thin red lines 180° apart along the length of the bomb. New type color markings will be found.

Length of tail: 28 inches.

Width of tail: 16 1/4 inches.

Width of tail fins: 6 15/16 inches.

Dimensions of tail struts: Length, 12 inches; width, 1 5/8 inches; thickness, 1/16 inch.

Material of tail: Steel.

Type of filling: Type 91 (trinitroanisol).

Weight of filling: 132 pounds.

Total weight of bomb: 550 pounds.

Charge/weight ratio: 24 percent.

Construction of body: The body is constructed of one piece of machined forged steel. It is threaded in the nose to receive a fuze. The after end of the body is threaded inter-nally to accommodate a male base plate. The base plate is drilled centrally to receive the tail fuze. A tail cone is secured to the base plate by six screws. The cone is empty and has three hinged doord to permit acces to the tail fuze pocket in the base plate.

Construction of tail: Four fins are welded to the tail cone and braced by a single set of box-type struts.

Figure 40 - Type 99 No. 25 Ordinary Bomb Model 1.