The QF 4 inch Mk V gunMk V = Mark 5. Britain used

Roman numerals Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, ...

to denote Marks (models) of ordnance until after World War II. Mark V indicates this was the fifth model of QF 4-inch gun. was a Royal Navy gun of World War I which was adapted on HA (i.e. high-angle) mountings to the heavy anti-aircraft role both at sea and on land, and was also used as a coast defence gun.

Service

Naval service

4-inch Mk V gun and crew on HMS Galatea Feb 1917 LAC 3398106

This QF gun was introduced to provide a higher rate of fire than the BL 4 inch Mk VII. It first appeared in 1914 as secondary armament on s, was soon adapted to a high-angle anti-aircraft role. It was typically used on cruisers and heavier ships, although s of 1917 also mounted the gun. Mk V was superseded by the QF 4 inch Mk XVI as the HA (i.e. anti-aircraft) gun on new warships in the 1930s, but it continued to serve on many ships such as destroyers, light and heavy cruisers in

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...

Army anti-aircraft gun

Early in World War I several guns were supplied by the Navy for evaluation as anti-aircraft guns for the home defence of key installations in Britain. They were mounted on static platforms and proved fairly successful after a fixed round was developed to replace the original separate round, and more followed. The AA mounting allowed elevation to 80° but loading was not possible above 62°, which slowed the maximum rate of fire. At the Armistice a total of 24 guns were employed in AA defences in Britain and 2 in France. After World War I the guns were returned to the Navy.

Coast Defence gun

From 1915 to 1928 several guns were mounted in forts to guard the estuary of the River Humber.

Anti-aircraft performance

Ammunition

Ammunition for the original low-angle guns introduced in World War I was

Separate QF Separate or separates may refer to: *Soil separates, three kinds of soil mineral particles: sand, silt, and clay *Separate (song), 2016 song by South African songstress Amanda Black *Separates (clothing), Mix-and-match separates, clothing * ''Sep ...

i.e. the shell and cartridge were separate items, but in World War II most guns used Fixed QF ammunition i.e. a single unit. The fixed Mk V ammunition was 44.3 inches (1.13 m) long and weighed 56 pounds (25 kg), while the projectile was 31 pounds (14 kg).Campbell, ''Naval Weapons of WWII'', p.58. QF4inchMkVLAFixedCartridge1934Diagram.jpg, Storing 4-inch ammunition on HMS Widgeon 1943 IWM A 18542.jpg,

Surviving examples

* A gun from HMNZS ''Tutira'' in front of the

Devonport Naval Base Devonport Naval Base is the home of the Royal New Zealand Navy, located at Devonport, New Zealand on Auckland's North Shore. It is currently the only base of the navy that operates ships, and has been in use as a navy base since 1841. The ba ...

, Auckland, New Zealand

Notes

References

Bibliography

*Tony DiGiulian
British 4"/45 (10.2 cm) QF Mark V and Mark XV
* I.V. Hogg & L.F. Thurston, ''British Artillery Weapons & Ammunition 1914–1918''. London: Ian Allan, 1972. *Brigadier N.W. Routledge, ''History of the Royal Regiment of Artillery. Anti-Aircraft Artillery, 1914–55''. London: Brassey's, 1994. *

External links

Gun drill for 4-inch Q.F. gun mark V (land Service) 1924
at State Library of Victoria {{DEFAULTSORT:QF 04-inch Mk 05 Naval guns of the United Kingdom Naval anti-aircraft guns World War I anti-aircraft guns Artillery of the United Kingdom Coastal artillery 100 mm artillery World War I naval weapons of the United Kingdom World War II naval weapons of the United Kingdom