BL 7.5-inch Mk I naval gun explained

Ordnance BL 7.5-inch gun Mk I
Origin:	United Kingdom
Type:	Naval gun
Is Ranged:	YES
Is Artillery:	YES
Is Uk:	YES
Service:	1905–1922
Used By:	Royal Navy
Wars:	World War I
Designer:	Vickers
Design Date:	circa. 1901
Manufacturer:	Vickers
Production Date:	1905
Number:	33
Weight:	13.7sp=usNaNsp=us
Part Length:	28feet bore (45 calibres)
Cartridge:	200lb
Caliber:	7.5inches
Rate:	4-5 rpm
Velocity:	2700sp=usNaNsp=us^[1]
Range:	7.9sp=usNaNsp=us at 15°^[2]
Breech:	Welin breech block
Elevation:	-5° to +15°

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

History

This gun was only mounted on Devonshire class cruisers commissioned in 1905, and was quickly superseded by the 50-calibre 7.5-inch Mk II gun.

See also

• List of naval guns

References

• Book: Friedman, Norman. Naval Weapons of World War One. Seaforth. Barnsley, South Yorkshire, UK. 2011. 978-1-84832-100-7.

External links

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

Notes and References

1. 2700 ft/sec firing a 200-pound projectile: Brasseys Naval Annual 1902 using 61 lb cordite MD size 26 propellant : Treatise on Ammunition 1915
2. Book: Friedman, Norman. Naval weapons of World War One. 2011-01-01. Seaforth. 978-1-84832-100-7. 786178793.