QF 4 inch naval gun Mk IV, XII, XXII

QF 4 inch naval gun Mk IV, XII, XXII

Infobox Weapon
name= Ordnance QF 4 inch gun Mk IV, XII, XXII


caption=Mk IV gun from HMS "Lance" at the Imperial War Museum, London
origin= United Kingdom
type= Naval gun
Submarine gun
is_ranged=yes
is_explosive=
is_artillery=yes
is_UK=yes
service=1911-1940s
used_by=UK
ISR
wars= World War I
World War II
designer=
design_date=
manufacturer=
production_date=
number=
variants=
weight=convert|2750|lb|kg|sigfig=3 barrel & breech
length=
part_length=convert|160|in|m|sigfig=4 bore (40 calibres)
width=
height=
crew=
cartridge=Mk IV : Separate QF convert|31|lb|kg|sigfig=4;
Mk XII & XXII : Fixed QF convert|31|lb|kg|sigfig=4, convert|35|lb|kg|sigfig=4 from 1944DiGiulian]
caliber=convert|4|in|mm|sing=on|sigfig=4
action=
rate=
velocity=Mk IV : convert|2370|ft/s|m/s [2370 ft/sec for Mk IV gun with 31 lb projectile in WWI, using 5 lb 1 oz 12 drams cordite MD size 16 propellant (Treatise on Ammunition, 10th Edition 1915)]
Mk XII & XXII : convert|1873|ft/s|m/s
range=
max_range= convert|10000|yd|m
sights=
breech=horizontal sliding block
recoil=
carriage=
elevation=
traverse=
The QF 4-inch gun Mk IV was introduced in 1908 as a more powerful alternative to the preceding QF 4 inch Mk III gun, providing an increase in projectile weight from 25 to 31 pounds.

Mk IV gun

Mk IV armed many British destroyers and some cruisers in World War I.It was used to arm merchant ships in World War II.

The guns armed the following warships :
*"Forward" class scout cruisers as re-gunned in 1911
*"Sentinel" class scout cruisers as re-gunned 1911-1912
*"Pathfinder" class scout cruisers as re-gunned 1911-1912
*"Adventure" class scout cruisers as re-gunned 1911-1912
*Acasta (K) class destroyers of 1911
*"Laforey" (L) class destroyers of 1913
*Yarrow M class destroyers laid down 1912 - 1915
*Admiralty M class destroyer of 1913
*Thornycroft M class destroyers laid down 1913 - 1915
*Hawthorn M class destroyer of 1914
*"Talisman" class destroyers of 1914
*"Medea" class destroyers of 1914
*"Faulknor" class leaders of 1914
*"Marksman" class destroyers of 1914
*"Anzac" class destroyers of 1915
*Yarrow Later M class destroyers of 1915
*R class destroyers of 1916
*S class destroyers of 1917

Mk XII and XXII submarine gun

The Mk XII variant was developed for arming submarines from 1918.The Mk XXII was developed to arm submarines during World War II.These submarine guns fired a heavier 35-pound projectile from late 1944.


urviving guns

* The Mk IV gun from HMS "Lance" which fired the first British shot of World War I on 5 August 1914 is on display at the Imperial War Museum, London.
* A Mk XXII gun from a British S class submarine is displayed at the Clandestine Immigration and Naval Museum, Haifa, Israel.

ee also

*List of artillery#Naval_guns

Notes

References

*Tony DiGiulian, [http://www.navweaps.com/Weapons/WNBR_4-40_mk4.htm British 4"/40 (10.2 cm) QF Marks IV, XII and XXII]

External links


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