BL 7.5 inch Mk I naval gun

Ordnance BL 7.5 inch gun Mk I
Starboard wing gun on HMS Antrim
Type	Naval gun
Place of origin	United Kingdom
Service history
In service	1905 - 1920
Used by	Royal Navy
Production history
Designer	Vickers
Designed	circa. 1901
Specifications
Barrel length	337.5 inches (8,573 mm) bore (45 calibres)

Shell	200 pounds (90.72 kg)
Calibre	7.5-inch (190.5 mm)
Muzzle velocity	2,700 feet per second (820 m/s)^[1]

The BL 7.5 inch gun Mk I was a British 45 calibres medium-velocity naval gun which entered service with the Royal Navy in 1905.

1 History
2 Surviving examples
3 See also
4 Notes
5 References
6 External links

History

This gun was only mounted on Devonshire class cruisers commissioned in 1905, and was quickly superseded by the 50-calibres 7.5 inch MK II gun.

Surviving examples

Notes

^ 2700 ft/sec firing a 200-pound projectile: Brasseys Naval Annual 1902 using 61 lb cordite MD size 26 propellant : Treatise on Ammunition 1915

References

External links

Tony DiGiulian, British 7.5"/45 (19 cm) Mark I

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 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 · 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 & light cruiser main armament	QF 12 pdr 18 cwt · QF 14 pounder · 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 · 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 & small cruiser armament	QF 12 pdr 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 D Depth charge · 7.5 inch howitzer

Landing guns	QF 12 pounder 8 cwt