name means that it had a bore diameter of 1.1 in (28mm) and barrel caliber of 75 (1.1inches × 75 = 82.5 in (2.1 m)). The gun was designed to replace the
mm (6.1 in) is a NATO-standard artillery shell caliber that is used in many field guns, howitzers, and gun-howitzers. It is defined in AOP-29 part 1 with
The 14-inch/45-caliber gun, (spoken "fourteen-inch-forty-five-caliber"[citation needed]), whose variations were known initially as the Mark 1, 2, 3, and
terminology indicates the gun fired a projectile 5-inch (127 mm) in diameter, and the barrel was 51 calibers long. The different marks of the gun were Marks