No. 15 ball grenade

The No. 15 ball grenade was a grenade used by the British during World War I.

Country Name Origin Year
United Kingdom - UK (Great Britain) 1915
Country Name Operational Year Retirement Year
United Kingdom - UK (Great Britain) 1915 View

The No 15 was a time-fused grenade. It was internally fragmented and incorporated a cast-iron body.

To light the grenade, the user had to remove a covering that was on the fuse, then strike an external Brock matchhead igniter against the fuse.

There were two types of fuses available; the five-second and the nine-second. The former was intended for throwing, while the latter was intended for catapults.

The No 15 was one of the interim grenades created because of the problems associated with the No 1 grenade. Unlike the others, the No 15 had been created specifically for the Middle Eastern theatre of World War I, mostly for the fighting in the Dardanelles.

While crude, the No 15 did well in the Dardanelles. In addition, it could easily be mass-produced; in September 1915, more than 200,000 No 15s were created per week.

However, there were a few problems; the explosive charge was too large, which created smaller-than-expected fragmentation when the grenade exploded. In addition, it was considered too large because of its 3 in circumference. These problems were remedied with the No 16 oval grenade.

Type Time-fused grenade
Place of origin United Kingdom
Service history
In service 1915
Used by United Kingdom
Wars World War I
Production history
Designed 1915
Produced 1915
Specifications
Weight 1 lb 111/2 oz
Diameter 3in diameter
Filling Ammonal
Filling weight 51/2 oz
Detonation
mechanism
Timed friction fuse

End notes