Английская Википедия:BL 4-inch Mk I – VI naval gun
Шаблон:Use dmy dates Шаблон:Use British English Шаблон:Infobox weapon
The BL 4-inch gun Mk I – Mk VI[1] were a family of early British breech-loading 4-inch naval guns.
History
13 cwt Mk I, 15 calibres
This was the first 4-inch BL gun. With its short (60-inch total) barrel it had a range of only 5,500 yards.[2]
22.5 cwt Mk I, 25 calibres
With its longer barrel (100 inch bore) Mk I had a range of 7,200 yards.[2] Both early Mk I types were quickly withdrawn from service following the explosion of a similar BL 6 inch Mk II gun on board HMS Cordelia in June 1891.[2] Mk I 22.5 cwt continued to be used for training.
26 cwt Mks II - VI, 27 calibres
The improved 27-calibre Mk II gun and subsequent Marks, often referred to as 4 inch 26 cwt, replaced the early Mk I versions in service. The longer barrel (108 inch bore : 27 calibres) gave it a range of 7,700 yards.[3]
Mk II guns and later Marks armed the following warships :
- Шаблон:HMS as re-gunned in 1885
- Шаблон:HMS as re-gunned in 1885
- Pygmy-class composite screw gunboats of 1888
- Шаблон:Sclasss launched in 1889
- Шаблон:HMS as re-gunned in 1891
- Шаблон:Sclasss of 1894
The gun was succeeded in its class from 1895 by the QF 4-inch gun Mk I.
QFC 4-inch gun
A small number of these guns were converted to QF to use the same cartridges as the QF 4-inch gun. They were designated Mk I/IV, I/VI etc. depending on which Mark of BL 4-inch had been converted. All had a bore of 27.85 calibres after conversion, with a muzzle velocity of 2,177 ft/second.[4]
Surviving examples
- A gun from 1888 at Explosion! The Museum of Naval Firepower, Gosport from Victorian Forts and Artillery website
- A gun from HMS Gannet, mounted on top of Calshot Castle at the entrance to Southampton Water from Victorian Forts and Artillery website
See also
Notes and references
Bibliography
- Text Book of Gunnery, 1887. LONDON : PRINTED FOR HIS MAJESTY'S STATIONERY OFFICE, BY HARRISON AND SONS, ST. MARTIN'S LANE Шаблон:Webarchive
- Text Book of Gunnery, 1902. LONDON : PRINTED FOR HIS MAJESTY'S STATIONERY OFFICE, BY HARRISON AND SONS, ST. MARTIN'S LANE Шаблон:Webarchive
- Tony DiGiulian, British Early 4" (10.2 cm) Breech Loaders
External links
- Handbook for 4-inch B.L. gun mark V and VI land service 1890 at State Library of Victoria
- Handbook of the 4-inch Gun Marks V and VI. (Land Service.) 1904
- Mk V or VI gun as movable fortification gun, on siege overbank carriage. At Victorian Forts and Artillery website
- Mk I diagram and photos at Victorian Forts and Artillery website
Шаблон:VictorianEraBritishNavalWeapons
- ↑ Mk I – Mk VI = Marks 1 through to Mark 6. Britain used Roman numerals to denote Marks (models) of ordnance until after World War 2. This article covers the first six models of British BL 4-inch naval guns
- ↑ 2,0 2,1 2,2 DiGiulian
- ↑ Text Book of Gunnery 1902
- ↑ Ошибка цитирования Неверный тег
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