QF 4-inch naval gun Mk V - Weapon

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The QF 4 inch Mk V gun[note 1] 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.

Ordnance QF 4 inch gun Mk V
QF 4 inch HA guns aboard the cruiser HMAS Sydney, 1939–1940
Type	Naval gun Anti-aircraft gun Coastal defence gun
Place of origin	United Kingdom
Service history
In service	1914 - 1945
Used by	British Empire
Wars	World War I World War II
Production history
No. built	944[1]
Specifications
Mass	Barrel & breech: 4,890 lb (2,220 kg)[2]
Barrel length	Bore: 15 ft (4.6 m) (45 cal) Total: 15 ft 8 in (4.8 m)[2]

Shell	31 lb (14.1 kg) fixed QF or Separate-loading QF
Calibre	4-inch (101.6 mm)
Breech	horizontal sliding-block
Recoil	hydro-pneumatic or hydro-spring 15 inches (380 mm)
Elevation	mounting dependent
Traverse	mounting dependent
Muzzle velocity	2,350 ft/s (716 m/s)[2]
Maximum firing range	Surface: 16,300 yd (15,000 m)[3] AA: 28,750 ft (8,800 m)[2]
Filling	Lyddite, Amatol
Filling weight	5 pounds (2.27 kg)

Service

Naval service

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 Arethusa-class cruisers, was soon adapted to a high-angle anti-aircraft role. It was typically used on cruisers and heavier ships, although V and W-class destroyers 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Mk V was superseded by the QF 4 inch Mk XVI as the HA (i.e. anti-aircraft) gun on new warships in the 1930s, but it continued to serve on many ships such as destroyers, light and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.[4]

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.[5] At the Armistice a total of 24 guns were employed in AA defences in Britain and 2 in France.[6] 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.[7]

Anti-aircraft performance

Comparison with the other British World War I anti-aircraft guns[8]
Gun	muzzle velocity	Shell (lb)	Time to 5,000 ft (1,500 m) at 25° (seconds)	Time to 10,000 ft (3,000 m) at 40° (seconds)	Time to 15,000 ft (4,600 m) at 55° (seconds)	Max. height[9]
QF 13 pdr 9 cwt	1,990 ft/s (610 m/s)	12.5	10.1	15.5	22.1	19,000 ft (5,800 m)
QF 12 pdr 12 cwt	2,200 ft/s (670 m/s)	12.5	9.1	14.1	19.1	20,000 ft (6,100 m)
QF 3 inch 20 cwt 1914	2,500 ft/s (760 m/s)	12.5	8.3	12.6	16.3	23,500 ft (7,200 m)
QF 3 inch 20 cwt 1916	2,000 ft/s (610 m/s)	16	9.2	13.7	18.8	22,000 ft (6,700 m)[10]
QF 4 inch Mk V World War I	2,350 ft/s (720 m/s)	31 (3 c.r.h.)		9.6	12.3	28,750 ft (8,760 m)
QF 4 inch Mk V World War II [11]	2,350 ft/s (720 m/s)	31 (4.38/6 c.r.h.)				31,000 ft (9,400 m)

Ammunition

Ammunition for the original low-angle guns introduced in World War I was Separate QF 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).[12]

Fixed QF cartridge for LA (low-angle) gun, 1930s
Crew storing fixed rounds on the Kingfisher class sloop HMS Widgeon, August 1943

Surviving examples

A gun from HMNZS Tutira in front of the Devonport Naval Base, Auckland, New Zealand

Notes

Mk V = Mark 5. Britain used Roman numerals to denote Marks (models) of ordnance until after World War II. Mark V indicates this was the fifth model of QF 4-inch gun.

References

Tony DiGiulian quotes 283 Mk VC built for the navy during WWII; 554 earlier types built for the navy; about 107 earlier types built for the Army in WWI.
Hogg & Thurston 1972, Page 101
WWI 3 c.r.h. HE shell. Tony DiGiulian, "British 4"/45 (10.2 cm) QF Mark V and Mark XV"
Tony DiGiulian's webpage provides comprehensive information on this gun's Naval service. Tony DiGiulian (January 13, 2008). "British 4"/45 (10.2 cm) QF Mark V and Mark XV". Retrieved 2008-03-29.
Hogg & Thurston 1972, Page 100
Routledge 1994, Page 27
Hogg & Thurston 1972, Page 98
Routledge 1994, Page 9
Hogg & Thurston 1972, Page 234-235
Routledge 1994, Page 13
WWII details from Tony DiGiulian's website
Campbell, Naval Weapons of WWII, p.58.

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. ISBN 1-85753-099-3
Campbell, John (1985). Naval Weapons of World War Two. Naval Institute Press. ISBN 978-0-87021-459-2.

External links

Wikimedia Commons has media related to QF 4 inch Mk V naval gun.

Gun drill for 4-inch Q.F. gun mark V (land Service) 1924 at State Library of Victoria

v t e British Empire naval weapons of the First World War
Monitor guns	BL 9.2-inch Mk VI BL 9.2-inch Mk VIII BL 9.2-inch Mk X BL 9.2-inch Mk XII BL 12-inch Mk VIII US 14-inch 45 cal. BL 15-inch Mk I BL 18-inch Mk I
Capital ship main armament	Vickers 10-inch 45 cal. EOC 10-inch 45 cal. BL 12-inch Mk VIII BL 12-inch Mk IX BL 12-inch Mk X BL 12-inch Mk XI & XII EOC 12-inch 45 cal. Mk XIII BL 13.5-inch Mk V BL 13.5-inch Mk VI EOC 14-inch 45 cal. Mk I BL 15-inch Mk I
Armoured cruiser main armament	BL 7.5-inch Mk I BL 9.2-inch Mk X BL 9.2-inch Mk XI
Secondary armament and light cruiser main armament	QF 12-pounder 18 cwt QF 14-pounder Maxim-Nordenfelt QF 14-pounder Mk I & II QF 4-inch Mk III BL 4-inch Mk VII QF 4-inch Mk V BL 4-inch Mk IX BL 5.5-inch Mk I QF 6-inch Mk I – III BL 6-inch Mk VII BL 6-inch Mk XI BL 6-inch Mk XII BL 6-inch Mk XIII-XVIII BL 7.5-inch Mk II – Mk V
Destroyer and small cruiser armament	QF 12-pounder 12 cwt Mk II QF 4-inch Mk III BL 4-inch Mk VIII QF 4-inch Mk IV BL 4.7-inch Mk I
Merchant ship armament	QF 4.7-inch Mk I – IV QF 4.7-inch Mk V*
Submarine guns	BL 4-inch Mk XI QF 4-inch Mk XII
Anti-aircraft guns	QF 2-pounder "pom-pom" Mk II QF 3-inch 20 cwt QF 4-inch Mk V
Light weapons	.303 Vickers machine gun QF 3-pounder Hotchkiss QF 3-pounder Vickers QF 6-pounder Hotchkiss
Torpedoes	18-inch Mk V – VIII 21-inch Mk II 21-inch Mk IV
Mines	Spherical Mk I, II and III Vickers Elia mine Type H mine
Anti-submarine weapons	Type A Depth charge Type B Depth charge Type C Depth charge Type D Depth charge Type E Depth charge Type F Depth charge Type G Depth charge Cruiser Mine 7.5-inch howitzer
Landing guns	QF 12-pounder 8 cwt

v t e British Empire artillery of the First World War
Armoured vehicle guns	QF 3-pounder Vickers QF 6-pounder Hotchkiss QF 6-pounder 6 cwt
Infantry guns	1.59-inch Breech-Loading Vickers Q.F. Gun, Mk II
Field artillery	BL 12-pounder 6 cwt QF 12-pounder 8 cwt QF 12-pounder 18 cwt QF 13-pounder BL 15-pounder BLC 15-pounder QF 15-pounder QF 18-pounder QF 4-inch gun Mk III BL 4-inch gun Mk VII QF 4.5-inch howitzer
Medium & heavy artillery	QF 4.7-inch gun BL 5-inch howitzer BL 5.4-inch howitzer BL 60-pounder gun BLC 6-inch siege gun BL 6-inch gun Mk VII BL 6-inch gun Mk XIX BL 6-inch 26 cwt howitzer BL 6-inch 30 cwt howitzer BL 8-inch howitzer Mk I – V BL 8-inch howitzer Mk VI – VIII
Siege artillery	BL 7.5-inch Mk III naval gun BL 9.2-inch howitzer BL 9.2-inch Mk X naval gun BL 12-inch howitzer BL 12-inch Mk X naval gun BL 15-inch howitzer
Mountain artillery	RML 2.5-inch mountain gun BL 10-pounder mountain gun BL 2.75-inch mountain gun QF 2.95-inch mountain gun QF 3.7-inch mountain howitzer
Mortars	Garland trench mortar 3-inch Stokes mortar Vickers 1.57-inch mortar 2-inch medium mortar Newton 6-inch mortar 9.45-inch Heavy Mortar
Smoke and chemical weapons	4-inch Stokes Mortar Livens Projector Livens Large Gallery Flame Projector
Anti-aircraft guns	QF 1-pounder pom-pom QF 2-pounder "pom-pom" Mk II 75 mm AA gun QF 12-pounder 12 cwt QF 13-pounder 6 cwt QF 13-pounder Mk IV QF 13-pounder 9 cwt QF 3-inch 20 cwt QF 18-pounder QF 4-inch Mk V
Coastal artillery	QF 12-pounder 12 cwt QF 4-inch naval gun Mk I – III BL 6-inch Mk VII naval gun BL 9.2-inch Mk IX – X naval gun RML 9-inch
Railway guns	BL 9.2-inch railway gun BL 12-inch railway gun BL 12-inch railway howitzer BL 14-inch railway gun

v t e British Commonwealth naval weapons of the Second World War
Monitor guns	BL 15-inch
Capital ship main armament	BL 14-inch BL 15-inch BL 16-inch
Heavy cruiser main armament	BL 7.5-inch Mk VI BL 8-inch Mk VIII
Secondary armament and light cruiser main armament	QF 4-inch Mk V QF 4.5-inch QF 5.25-inch BL 6-inch Mk XII BL 6-inch Mk XXII BL 6-inch Mk XXIII
Minesweeper, Sloop, Corvette, Frigate and Destroyer armament	QF 6-pounder 10 cwt QF 12-pounder 12 cwt Mk V QF 4-inch Mk IV BL 4-inch Mk IX QF 4-inch Mk XVI QF 4-inch Mk XIX QF 4.5-inch BL 4.7-inch Mk II QF 4.7-inch Mk IX & XII QF 4.7-inch Mk XI
Submarine guns	QF 12-pounder 12 cwt Mk V QF 3-inch 20 cwt QF 4-inch Mk XII & XXII
Anti-aircraft weapons	Unrotated projectile Holman Projector 20 mm Oerlikon QF 2-pounder "pom-pom" Mk VIII 40 mm Bofors QF 3-inch 20 cwt QF 4-inch Mk V QF 4-inch Mk XVI QF 4.5-inch QF 4.7-inch Mk VIII
Light weapons	.303 Lewis machine gun .50 Vickers Mk III machine gun QF 3-pounder Vickers
Torpedoes	21-inch Mk VII 21-inch Mk VIII 21-inch Mk X 21-inch Mk XI 24.5-inch Mk I
Anti-submarine weapons	Thornycroft depth charge thrower Hedgehog Squid
Small craft armament	Molins 6-pounder Vickers K machine gun 18-inch torpedo
Foreign-sourced weapons	20 mm Oerlikon 40 mm Bofors 3-inch 23 caliber gun (US) 3-inch 50 caliber gun (US) 4-inch 50 caliber Mark 9 gun (US) 5-inch 51 caliber Mark 8 gun (US) Y-gun depth charge projector (US) Mark 8 torpedo (US)

На других языках

[de] QF 4-inch-Schiffsgeschütz Mk V

Das QF 4 inch (102 mm) war ein britisches Schiffsgeschütz aus dem Ersten Weltkrieg, das mit geeigneten Lafetten an die Verwendung als schweres Flugzeugabwehrgeschütz an Land und zur See angepasst wurde. Während des Ersten Weltkriegs fand es zusätzlich Verwendung in der Küstenverteidigung. Die Kaliberlänge betrug 45 (4,59 m). Als Munition kam im Ersten Weltkrieg sowohl zweiteilige Munition (Ladung und Geschoss getrennt) für die Seezielgeschütze als auch einteilige Patronenmunition (für die Flugabwehr) zur Verwendung. Alle Mk V, die ab 1918 gebaut wurden, verwendeten einteilige Munition – so genannte Granatpatronen.

- [en] QF 4-inch naval gun Mk V

[fr] Canon de marine de 4 pouces QF Mk V

Le canon de marine de 4 pouces QF Mk V est un canon naval monté sur les destroyers et les croiseurs de la Royal Navy durant la Première Guerre mondiale. Plus tard durant le conflit, ce canon est adapté en canon antiaérien et il devient le principal moyen de lutte antiaérienne à longue portée des navires britanniques jusqu'à la fin des années 1930. Ces derniers sont même réutilisés comme artillerie principale de destroyers durant la Seconde Guerre mondiale.

[ru] 4" морское орудие Mk V

QF 4 inch Mk V (англ. Скорострельное 4-дюймовое орудие пятой модели) — 102-мм британское корабельное орудие времён Первой и Второй мировых войн. Первоначально оно предназначалось только для стрельбы по надводным целям, но уже в ходе Первой мировой войны на его основе были разработаны зенитные установки, которые использовались и на суше. Также применялось как орудие береговой обороны.

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