4 "/ 40 QF Mk IV - British 102-mm light naval gun , which was introduced in 1911 as an improved version of the gun 4" / 40 BL Mk VIII and became the main weapon for most of the Royal Navy in the First World War .
| 4-mm light ship gun 4 "/ 40 QF Mk IV, XII, XXII | |
|---|---|
| QF 4 inch naval gun Mk IV, XII, XXII | |
 4 "/ 40 QF Mk IV from the destroyer Lance at the Imperial War Museum in London | |
| Production history | |
| Country of Origin |  United Kingdom |
| Service History | |
| It was in service | United Kingdom |
| Gun characteristics | |
| Caliber mm | 102 |
| Barrel length, mm / calibres | 4064/40 |
| Chamber volume, dm ³ | 4.70 |
| Barrel weight with a bolt, kg | 1250 |
| Projectile weight, kg | Mk IV: 14.06 Mk XII & XXII: 14.06 and 15.88 (since 1944 ) [1] |
| The initial velocity of the projectile, m / s | MK IV: 720 Mk XII & XXII: 571 |
| Loading principle | Breech-loading gun |
| Rate of fire rounds per minute | 13 |
| Gun mount specifications | |
| Rollback length, mm | 910 |
| Trunk angle, ° | -10 / +30 (depending on the tower) |
| Maximum firing range, m | 9100 |
Content
- 1 Option Mk IV
- 2 Options Mk XII and Mk XXII
- 3 surviving specimens
- 4 notes
- 5 Links
Variant Mk IV
The 4 "/ 40 QF Mk IV naval gun was in service with many British destroyers and some cruisers in World War I. During World War II, this gun was used to arm auxiliary vessels .
List of warships using the 4 "/ 40 QF Mk IV:
- Forward cruiser scouts as a result of rearmament in 1911
- Sentinel-class scout cruisers as a result of rearmament in 1911-1912
- Cruiser scouts of the Pathfinder type as a result of rearmament in 1911-1912.
- Scout cruisers of the "Adventure" type as a result of rearmament in 1911-1912.
- Destroyers of the Acasta type in 1911
- Laforey-class destroyers in 1913
- Yarrow-class destroyers from 1912 to 1915
- Admiralty destroyers of type M 1913
- Mastiff type destroyers 1913 - 1915
- Mansfield-class destroyers in 1914
- Destroyers of the "Talisman" type in 1914
- Destroyers of the Medea type in 1914
- The leaders of the destroyer type Folknor in 1914
- The leaders of destroyers of the Marxman type in 1914
- Leaders of destroyers of the Parker type in 1915
- Late Yarrow-class destroyers in 1915
- Type R destroyers in 1916
- Type S destroyers in 1917
- Minesweepers of the "Fundy" type in 1938
Variants Mk XII and Mk XXII
The Mk XII variant was developed for the armament of submarines in 1918 , and the Mk XXII appeared during the Second World War . Since the end of 1944 , these guns have been equipped with heavier 35-pound shells. [1] Shortly after the end of hostilities, the Mk XXII was replaced by the more advanced and lighter Mk XXIII.
List of submarines that used the 4 "/ 40 QF Mk XII and Mk XXII:
- Type L Submarines
- Submarines Type One
- Partian-class submarines
- Thames-class submarines
- Grampus Submarines
- T-type submarines
- Type S submarines
- Part of Amphiton-class submarines
Surviving instances
The destroyer "Lance" , from which the first shot of Britain was fired in the First World War , exhibited at the Imperial War Museum in London .
Notes
- ↑ 1 2 DiGiulian
Links
- Tony DiGiulian, British 4 "/ 40 (10.2 cm) QF Marks IV, XII and XXII