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

Over-all length: 72 inches.

Length of body: 35 1/2 inches.

Diameter of body: 13 3/4 inches.

Thickness of wall: 1/4 inch.

Material of wall: Steel.

Type of suspension: Horizontal.

Suspension lug: Normal Navy type suspension lug.

Color and markings: Gray over all with a green band forward of a blue band on the nose.

Length of tail: First section 21 1/2 inches; extension, 15 inches.

Width of tail: 14 inches.

Width of tail fins: 5 1/4 inches.

Dimensions of tail struts: Forward struts: 5 1/4 inches x 2 inches x 1/8 inch; after struts: 5 inches x 1 1/8 inches x 1/16 inch.

Material of tail: First section, sheet steel; extension, plywood.

Type of filling: Type 98 explosive.

Weight of filling: 317 pounds.

Total weight of bomb: 572 pounds.

Charge/weight ratio: 56 percent.

Construction of body: A cast-steel nose is attached by a continuous circumferential weld and 16 plug welds to a longitudinally welded tubular steel body. A tail cone is atta-ched to a collar by 36 screws. The collar is held in the base of the bomb body by a single row of 16 plug welds.

Construction of tail: The tail is constructed in two sections, the first section has eight 1/8-inch sheet steel fins welded to the tail cone and supported by seven steel struts. The second consists of eight-plywood fins in steel frames supported at their inner edges by a metal cylinder 4 inches in diameter and on their outer edges by seven steel struts. The second is attached to the first by bolted steel plates on each of the eight fins. Ap-partently the wooden tail section is de-signed to come off on water impact.

Figure 49 - Type 1 No. 25 Mk 2 Bomb Model 1.