Over-all length: 53 inches.

Diameter of body: 7.8 inches.

Weight of load: 5.5 pounds.

Weight of propellant: 22.0 pounds.

Total weight: 145.2 pounds.

Maximum speed: 270 m./sec.

Color and markings: Gray overall with green and silver nose bands and red tail struts.

General description: This rocket, along with type 3 No. 1 Mk 28 Model 1, were the only Japanese Navy rockets which were actually under production at the end of the war. It is an aircraft-launched rocket intended for use against formations of large enemy planes, designed to eventually take the place of type 99 No. 3 Mk 3 for air to air bombing.

The bomb consists of three sections; nose, barrel and tail. The nose section is conical in shape, with a fuze well in the nose and contains a burster charge, and a charge of in-cendiary shrapnel consisting of white phosphorus filled steel pellets. It is threaded onto the barrel, and secured in place with screws.

The barrel is cylindrical in shape, closed at the forward end, and serves as the container and burning chamber for the rocket propellant. It is fitted with one longitudinal launching rail.

The tail section is conical in shape, and is fitted with four fins of conventional Navy type. It is threaded onto the barrel, and secured in place with screws. The rear end is con-stricted to form a venturi for the escape of the driving gases.

The propellants is in grains 350 millimeters long and 19.2 millimeters in diameter, and is of the ballistite type, packed into the barrel. It is ignitied electrically.

The fuze used in this bomb is 10 second clockwork arial burst fuze, using the standard Navy fuze clock, housed in a special brass case with a hand operated setting ring gradu-ated in seconds from 0 to 10.

The data on this bomb is the result of incomplete investigation, and must not be consi-dered as specific, accurate information.

Figure 65 - Type 3 No. 6 Mk 27 Bomb (Rocket) Model 1.