12-inch/50-caliber Mark 8 gun

12"/50 caliber Mark 8 gun
USS Guam firing her 12"/50 guns during a training session sometime in 1944–1945.
TypeNaval gun
Place of originUnited States
Service history
In service1944–1961[1][2]
Used byAlaska-class cruisers
WarsWorld War II
Production history
Designed1939
ManufacturerNaval Gun Factory, Midvale and Bethlehem Steel Corporation, Watervliet Arsenal[1]
Specifications
Barrel length51 feet (15.54 m) bore (50 cal)[1]

Shell1,140 pounds (520 kg)
Caliber12 inches (304.8 mm)[1]
Rate of fire2.4–3.0 rounds per minute[1]
Maximum firing range38,573 yards (35,271 m)[1]

The 12"/50 caliber gun Mark 8 was a US naval gun mounted on the Alaska-class cruiser. The gun, like the "large cruiser" that mounted it, was intended to fill the gap between US "heavy cruisers" (6-8") and US battleships (14-16"). The name describes the size of the shells, 12 inches in diameter, and the length of the bore in calibers (50 bore diameters).

  1. ^ a b c d e f Cite error: The named reference navweaps was invoked but never defined (see the help page).
  2. ^ 1961 is the year the last remaining Alaska-class ship, Guam, was decommissioned.

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