Type 97 No. 6 Land BombNo. 25 Land Bomb and Type 98 No. 25 Land Bomb
Japanese Explosive Ordnance – Bombs, Bomb Fuzes, Land Mines, Grenades, Firing Devices
and Sabotage Devices
Chapter 1 – Section 2
Japanese Navy Bombs
Type 2 No. 6 Land Bomb Model 5

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

Over-all length: 42 inches.

Length of body: 25 3/4 inches.

Diameter of body: 10 inches.

Thickness of wall: 1/16 inch.

Material wall: Sheet steel.

Type of suspension: Horizontal.

Suspension lug: Standard Navy type suspension lug.

Color and markings: Gray over all with a brown nose section. New type color markings will be found.

Length of tail: 16 1/4 inches.

Width of tail: 10 inches.

Width of tail fins: 4 1/4 inches.

Dimensions of tail struts: Diameter, 10 inches; width, 1 inch; thickness: 1/16 inch.

Material of tail: Sheet steel.

Type of filling: Five 7-kg. high-explosive bombs and a high-explosive central burster charge.

Total weight of bomb: 132 pounds (approximate).

Construction of body: A hollow-steel nosepiece and a hollow tail cone are connected by an explosive-filled central tube on the inside and two half cylinders of sheet steel on the outside. The two half cylinders are connected by four metal tabs riveted to each half of the cylinder on the inside. There are four notches 3/16 inch square and 90° apart in each end of the assembled cylinder. The notches fit around the four pins which are on the nosepiece and tailpiece. There is a spacer plate and five spacer strips attached to the central tube.

Construction of tail: Four steel fins are welded to the tail cone and are braced by a single circular strut at the after end. The fins are set at an angle to the tail cone in such a manner that they will impart a rotary motion to the container when it is dropped. Des-cription of 7-kg. high-explosive bomb. - No fuze or complete bomb has been found. The only information available on the bomb and fuze comes from a captured Japanese bomb chart. The bombs are alleged to be nose fuzed, 20 3/4 inches long and 3 1/2 inches in diameter.

The tail fins from several of the bombs have been found. The tail fins are painted grey. They are made up of two metal strips, the widest one has a 4 1/4 inch slot which allows the norrower one to fit into it. The fins are spot- welded at the extreme ends of the slot. The tail fins are braced by box-type struts welded to the aftermost end.

Dimensions:
Width
(inches)
Length
(inches)
(approx.)
Thickness
(inches)
Wide fin 4 1/4 10 3/8 1/16
Norrow fin 3 1/2 10 3/8 1/16
Tail struts 19/32 2 3/4 1/16
Remarks: Production of this bomb ceased before the end of the war.

Figure 36 - Type 2 No. 6 Land Bomb Model 5.

Type 97 No. 6 Land BombNo. 25 Land Bomb and Type 98 No. 25 Land Bomb