40mm Vickers Medium Antiaircraft Gun

Specifications:

Weight of round

2 lbs
0.91 kg

Velocity

1969 feet/s
600 m/s

Maximum elevation      

85 degrees

Range

11,000 yards
10,000 meters

Altitude

23,000 feet
7000 meters

Rate of fire

200 rounds per minute

This was an entirely different weapon from the famous Bofors. It was manufactured in England and some 500 guns and 200 mounts were imported to Japan during the late 1920s and early 1930s. These were used on a number of major Japanese surface combatants.

The range and altitude capabilities tabulated here are estimates only.

References

Campbell (1985)