QF 4-inch naval gun Mk XIX explained

Ordnance QF 4 inch gun Mk XIX
Type:Dual-purpose gun
Is Ranged:yes
Is Artillery:yes
Is Uk:yes
Service:1939[1]
Used By:

Royal Australian Navy
Wars:World War II
Design Date:1938
Number:2,023
Part Length:160inches bore (40 calibres)
Cartridge:Fixed QF HE, Starshell
Cartridge Weight:35lb
Caliber:4sigfig=4NaNsigfig=4
Velocity:396m/s[2]
Max Range:8870m (29,100feet) at +40°
Breech:horizontal sliding-block
Elevation:-10° to +60°

The QF 4-inch Mk XIX gun[3] was a British low-velocity 4-inch 40-calibre naval gun used to arm small warships such as and and some in World War II, mainly against submarines.[4]

Description

It succeeded the higher-velocity World War I-era BL 4-inch Mk IX (typically deployed on s in the escort role). The Mk XIX fired fixed ammunition which was 38.5inches long and weighed 50lb. The weight of the projectile was increased from 31lb for the Mk IX to 35lb for the Mk XIX. The high-angle mounting used for the XIX added some anti-aircraft capability and allowed it to fire starshells to illuminate the battle area at night.

Surviving examples

Bibliography

External links

Notes and References

  1. Web site: United Kingdom / Britain 4"/40 (10.2 cm) QF Mark XIX . NavWeaps . Tony DiGiulian . 4 June 2021.
  2. http://navalhistory.flixco.info/H/119171x53535/8330/a0.htm

    quotes from John Campbell, "Naval Weapons Of World War Two", Annapolis : Naval Institute Press, 1985,

  3. Mk XIX = Mark 19. Britain used Roman numerals to denote Marks (models) of ordnance until after World War II. This was the nineteenth model of British QF 4-inch gun
  4. DiGiulian