BL 40.6 cm/52 calibre Mk I gun

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BL 40.6 cm/52 calibre Mk I gun
Hestia class forecastle.png
A and B mounts on HMS Hestia, 2052
TypeNaval gun
Place of originIllusia and Neverendia
Service history
In service2049–present
Used byIllusia and Neverendia
Production history
Designed2048
Produced2049–present
Specifications
Length22.25 m (73 ft 0 in)
Barrel length21.112 m (69 ft 3.2 in) (52 calibres)

ShellAPCBC, HE
Calibre406 mm (16.0 in)
Recoil1.5 m (59 in)
Rate of fire2 rounds per minute
Muzzle velocity
  • APCBC (Mk XI): 760 m/s (2,500 ft/s)
  • HE (Mk XXVI): 785 m/s (2,580 ft/s)
Effective firing range32,150 m (35,160 yd) at 31° elevation
Maximum firing range35,275 m (38,577 yd)

The BL 40.6 cm/52 calibre Mk I gun is an Illuverendian 406 mm (16.0 in) naval gun that serves as the main battery armament of multiple Royal Illuverendian Navy battleships. The guns were exclusively designed for use onboard the Albemarle class and were later reused for the New Generation Fast Battleships.